






































Citation


AsiaCALL Online Journal Received: 11/06/2021 

ISSN 1936-9859; https://asiacall.info/acoj Revision: 11/07/2021 

Vol. 12, No. 4, 2021  Accepted: 12/07/2021 

pp. 46-65  Online: 12/07/2021 

 

 

CITATION | Nguyen, C. H., Nguyen, H. T., & Le, T. Q. (2021). Boosting English Majors’ Ability in Pronouncing Stressed Vowels 

via Blue Canoe, a Mobile-based Application: A Focus on Vietnamese EFL Learners. AsiaCALL Online Journal, 

12(4), 46-65. 

 

   Boosting English Majors’ Ability in Pronouncing Stressed Vowels via Blue Canoe, a 

Mobile-based Application: A Focus on Vietnamese EFL Learners 

Cuong Huy Nguyen 1*, Ha Thi Nguyen1, Thao Quang Le1 

 

1Faculty of Foreign Languages, Van Lang University, Ho Chi Minh City, Vietnam 
*Correspondence: Nguyen Huy Cuong, Van Lang University, Vietnam. E-mail: cuong.nh@vlu.edu.vn 

 

Abstract 

There is no doubt that teaching and learning English pronunciation is one of the major concerns 

facing EFL/ESL educators and experts. Specifically, stressed vowel practice instruction has 

been considered a massive challenge among Vietnamese teachers because these two languages 

possess certain distinctive features in phonetics. This new digital age indicates that mobile-

based applications have actively promoted EFL/ESL learners’ sound production. Thus, this 

paper pinpointed how digital apps affected learning vowels among English learners and 

discussed their attitudes towards the apps with the help of 32 first-year students majoring in 

English at Van Lang University, Ho Chi Minh City. A pre-test and post-test were used to see if 

there was a significant distinction in the participants’ ability to acquire vowel sounds. In 

addition, a five-point Likert scale questionnaire was employed to test how content they were 

when they used the app. The results show that with mean scores of 6.88 and 11.177 in the pre-

test and post-test, respectively, students in the experimental group improved than their 

counterparts in the other group (M=6.0 in the pre-test and 8.47 in the post-test). Hence, an 

explanation for the better performance in the intervened group is that the participants practiced 

pronouncing vowels with the application Blue Canoe during the course. In addition, these 

participants also had a favorable attitude towards the mobile-based application in their 

phonetics class, with a mean score of 3.96 on the questionnaire. 

Keywords: mobile game-based apps/ activities, English pronunciation/ vowel sounds, oral 

fluency. 

 

1. Introduction 

As English has been widely used as a means of international communication, the question of 

how to produce its sounds intelligibly has generated deep concerns among ESL/EFL learners 

and educators (Nguyen & Nguyen, 2007; Vang, 2003). Dhillon (2016) and Jones (2018) stated 

that pronunciation is the principal element of successful oral communication. If they do not 

acquire good and clear pronunciation, even if they might use proper grammar and vocabulary, 

their speech still becomes unintelligible (Celce-Murcia, Brinton, & Goodwin, 2010). Do (2021) 

and Van et al. (2021) also states that pronuncitation is seen as one of the most crucial features 

in the area of learning english. 

mailto:cuong.nh@vlu.edu.vn


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However, several studies have shown that pronunciation teaching in EFL classrooms is often 

traditional, unplanned, and is mainly about on-spot error correction. For example, Hismanoglu 

and Hismanoglu's (2010) research findings indicate that most EFL teachers prefer using reading 

aloud, dictionaries, and dialogues in their phonetics class. Also, Foote et al. (2016) also 

demonstrate that when teaching pronunciation, most EFL teachers tend to apply some 

techniques that are mainly related to giving corrective feedback on their students' errors instead 

of incorporating teaching episodes into their lesson plans. Similarly, as Wahid and Sulong 

(2013) noted, EFL teachers at a university in Malaysia focus too much on correcting their 

students’ pronunciation errors rather than giving explicit pronunciation instructions. 

Consequently, the students are quickly bored with and discouraged from learning and practicing 

English pronunciation.  

One of the most apparent reasons why learning English pronunciation is a huge challenge for 

most students is related to vowel sounds. A study conducted by Pham and McLeod (2016) 

demonstrates that learners of English encounter several vowel-related difficulties when they 

study English pronunciation because its vowel system seems to be more complex than that in 

their mother tongue. Additionally, regardless of their ability to distinguish vowels and 

consonants in minimal pairs, students still find it challenging to pronounce vowel sounds in 

multi-syllabic words (Al-Rubaat & Alshammari, 2019; Heggie & Wade-Woolley, 2017). 

Alongside the speedy development of technology, using computerized applications in teaching 

pronunciation is a must since they are such a powerful tool to better English learners’ 

pronunciation and boost their interest in learning the language (McCauley, Nguyen, & 

McDonald, 2016). Similarly, according to Godwin-Jones (2014), digital games or mobile-based 

games have great potential in teaching and learning foreign languages thanks to cellphones - a 

major technological advancement. Candilas (2021), Tran and Nguyen (2021) confirms that with 

technology support, online synchronous learning, a digital teaching platform, is seen as the best 

use for English learning and can be an indispensable tool in education in the time of the 

pandemic. 

In Vietnam, despite their capability of enhancing English learners' pronunciation, using mobile 

games in class has not gained much attention from EFL/ESL teachers. Particularly, teachers are 

still more likely to use traditional activities such as transcription practice and minimal pair 

drills, which are not easy for many L2 adult learners to improve their pronunciation 

(Hismanoglu & Hismanoglu, 2010). Besides, little research on integrating technology in 

English pronunciation instruction has been conducted (McCauley et al., 2016). According to 

Nguyen (2021), technology is the most effective tool to help the students acquire vocabulary 

and other aspects of learning a foreign language.  

Hence, the current study is carried out with two primary objectives: (1) to investigate if Blue 

Canoe can assist EFL students at the faculty of foreign languages in Van Lang University in 

improving their vowel production of English multi-syllabic words and (2) to ascertain their 

attitudes towards such application. 



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48 
 

For the purposes set out above, the study addresses the following research questions: 

1. What are the effects of using Blue Canoe on learning stressed vowels among first-year 

English majors? 

2. Do students have positive attitudes towards using mobile apps on learning vowels? 

The research has significantly contributed to EFL/ESL teaching and learning in Vietnam’s 

context. Indeed, it has pointed out how digital games affect English majors' vowel sound 

production and their positive feedback on applying computerized applications in pronunciation 

class. Thus, the findings have supported using handy technological devices to foster learning 

outcomes in English language teaching. These two inputs from the study have also enabled 

teachers of English to have a clear point of choosing appropriate games and activities that can 

enhance their students' vowel pronunciation and minimize their negative feelings in the age of 

technological advancement. 

2. Literature review 

What are vowel sounds? 

According to Celce-Murcia et al. (2010), there are 14 vowel sounds in American English, 

including simple phonemes with a glide movement (/iy/, /ey/, /ow/, /uw/) and without it (/ɪ/, /ε/, 

/æ/, /ɑ/, /ͻ/, /ʊ/ and /ʌ/) and three diphthongs (complex vowels) (/ay/, /aw/ and /ͻy/) (p. 114-

125). Their classification depends on the height of the body of the tongue (high, mid, and low); 

how forward or backward the tongue is in the oral cavity (front, central, or back); the degree of 

muscular tension (tense or lax); and the position of the lips (rounded or unrounded) (Lane, 2010, 

pp. 163-164). Roach (2009) says that the main distinction between vowel sounds and consonant 

sounds is that vowels do not obstruct the airflow when it passes from the larynx to the lips 

(p.10). He also reports that phonetically, such sounds are always found at the center of a 

syllable.  

Intelligibility and Vowel Quality in Stressed Syllables 

Zielinski (2006) defines intelligibility as how well a speech is understood by listeners or how 

much a listener can recognize words, phrases. It should also focus on English pronunciation 

teaching and learning (Lane, 2010, p. 2). That means as English has become a globally spoken 

language, EFL teachers need to attempt to help their learners to achieve mutual intelligibility 

instead of forcing them to achieve native-like pronunciation (Jenkins, 2002). 

If pronunciation teaching aims to obtain intelligibility, identifying which speech feature is the 

leading contributor to the overall intelligibility is a must. According to Lesner, Sandridge, and 

Kricos (1987), incorrect vowel production has a negative effect on speakers’ intelligibility. In 

other words, in oral communication, a speech is likely to be misinterpreted if the speakers do 

not produce accurate vowel sounds.  Several studies then support this viewpoint. Research by 

Rogers and Dalby (2005) shows a positive correlation between vowel production accuracy of 

Mandarin speakers of English and their overall intelligibility. Similarly, Bent, Bradlow, and 

Smith (2007) investigated the relationship between the intelligibility of Chinese speakers of 



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49 

English and accurate segment production in different word positions. Native English speakers 

are then asked to listen to the participants and write these sentences down. The findings 

demonstrate that vowel sounds contributed more information to overall auditory speech 

intelligibility than their counterpart. 

Another aspect of intelligible pronunciation is stress placement. Valcke and Pavón (2015) noted 

that this element is crucial to interpreting messages in statements. They believe that native 

English speakers generally attach great importance to the quality of the vowel in a stressed 

syllable than other features that constitute stress when they listen to non-native English 

speakers. This could be explained that correct stressed syllables help them identify a word much 

more easily. In other words, misplaced stress leads to intelligibility loss and vowel quality 

change (Richards, 2016) 

Pronunciation teaching approaches  

One of the most popular approaches used in teaching L2 pronunciation and is still prior is the 

audio-lingual approach. The primary purpose of this approach is to help adult students to 

memorize grammatical sentence patterns by drilling (Larsen-Freeman, 2000). With the 

approach, teachers emphasize dialogues, minimal pair drills, and morphemes (Celce-Murcia, 

Brinton, & Goodwin, 1991). In fact, the more learners repeat the whole or part of a dialogue in 

L1, the more the learners can emphasize the importance of proper pronunciation, intonation, 

stress, etc.  

However, according to Odisho (2007), teaching L2 pronunciation through memorization in the 

form of 'repeat-after-me activities appears more effective for children than for adults. In his 

book, Odisho (2014) believes that since the human brain tends to control all senses to gather 

more information to make decisions, it does not rely on one sensory source. EFL teachers 

generally fail to teach adult learners English pronunciation since pronunciation is also conveyed 

via the visual sensory modality and kinesthetic sensory modality. They apply the traditional 

pronunciation approach relying heavily on the auditory sensory modality (model, hear and 

pronounce) solely. Consequently, a new pronunciation teaching approach, the Multisensory, 

Multicognitive Approach (MMA), is proposed. Odisho (2007) notes that teaching L2 

pronunciation with a multisensory approach means EFL learners are required not only to hear 

and make sounds but also to see and feel them in the context of natural speech. Similarly, in L2 

classes, the metacognitive approach gives students more encouragement to do more than one 

simple task. For instance, they have to listen to the sounds carefully and store them in short-

term memory. After that, the L2 learners need to compare those sounds with ones already part 

of their psycholinguistic inventory using all cognitive processes. 

Game-based learning  

According to Qian and Clark (2016), game-based learning refers to an environment in which 

game activities help students acquire better knowledge and skill acquisition. These games could 

be divided into two different kinds, including entertaining games and educational games. 

Although they are both employed in the learning environment, their purposes are slightly 



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50 
 

different. The first is mainly designed for fun, while the latter is used for educational purposes 

(Connolly et al., 2012). 

However, choosing appropriate games in language learning is a consideration for many English 

teachers. Shanahan, Hermans, and Haytko (2006) stated that effective-in-class games must have 

five fundamental characteristics. First, the games must be related to the learning outcomes. 

Their rules also are easy to understand by players, but they must less important than the 

learning. Such games then provide more motivation for the students to perform better. Finally, 

these students can give feedback on the games to their teachers. Corno and Snow (1986) also 

believe that educators can achieve educational purposes successfully if they can satisfy the 

needs of students with different learning styles (visual, auditory, and kinesthetic styles). In that 

case, games are the optimum choice because they can offer teachers and educators countless 

opportunities to implement that task.  

Benefits of games in language learning 

Educational games are regarded as one of the most effective tools for teachers and students 

because they can support traditional teaching methods (Lujan & DiCarlo, 2006). For teachers, 

games can help them teach their students complex content (Cardona et al., 2007) and allow 

them to have discussions with their peers about the target concepts (Odenweller, Hsu, & 

DiCarlo, 1998). For students, games add more enjoyment to their learning environment (Wang, 

2010). Zhu (2012) adds that for learners of foreign languages, games, especially language 

games, will become their preference if those games are used effectively in classrooms. 

Therefore, the students can enjoy learning the target language with high motivation (Reese & 

Wells, 2007) while their anxiety is lowered. 

Benefits of mobile devices in pronunciation learning  

The widespread use of mobile phones to develop language skills in education is not a new 

concept. In fact, integrating these devices has had several considerable merits for language 

learners (Murphy, 2011). One of these advantages is to improve students’ foreign language 

pronunciation. Wilson (2008) discovers that by utilizing interactive English pronunciation apps, 

EFL students are likely to enhance their pronunciation skills because they offer numerous 

practical exercises and native speakers’ instant feedback to users (Agusalim, Assidiqi, & 

Muhammad, 2014). Similar findings found in research by Xiao and Luo (2017) indicate that 

students who learned phonetics with the Liulishu app outperformed those who did not.  

The second merit of using mobile devices for learning is that they are more accessible and user-

friendly than desktop computers (Stockwell, 2007). That means students do not need to stay in 

any set location but still get access to learning materials without attending a face-to-face class.  

Another plus point of this practice is that teachers can facilitate their students’ studies with fun 

mobile games in an interactive and fascinating environment by using portable devices such as 

smartphones or tablets. Thus, not only do the students become autonomous (Ertmer, 2005), but 

their learning motivation also increases (Ebrahimzadeh & Alavi, 2016). 



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Benefits of mobile games in pronunciation   

According to Gee (2007) and Prensky (2006), playing mobile games has become extremely 

popular recently and offered promising benefits when used in language classrooms. Apart from 

the benefits mentioned above of games in L2 learning, mobile games will assist students in 

improving their language acquisition (Chiu, Kao, & Reynolds, 2012). Suppose EFL learners 

are engaged in mobile game-based activities. In that case, they are likely to gradually level up 

their language proficiency, such as writing development (Allen, Crossley, Snow, & McNamara, 

2012) and better oral proficiency (Lan, 2014). Moreover, a study conducted by Young and Wang 

(2014) demonstrates a remarkable improvement in students' pronunciation performance after 

they use mobile games in their EFL class. This conclusion is strengthened by the research 

findings of Berry (2021). In his study, a video game called Spaceteam ESL was used as the 

main treatment for Korean speakers of English with the ages of 18 and 22 in 3 experimental 

groups (EG). After a 15-week semester, he found out those students improved more 

significantly than those who utilized paper-based pronunciation exercises. 

Related studies 

The use of games in language teaching and learning, especially in teaching pronunciation, has 

received considerable attention in recent years. Nguyen (2015) gets the most out of Bingo, 

Noughts, and Crosses and other games to enhance second-year non-English major students' 

pronunciation at Ha Noi University. Her study findings show that students at different English 

levels can make huge progress in their pronunciation after receiving the treatment. The results 

also reveal that her students have a positive attitude towards the game usage in their 

pronunciation class. 

Another study conducted by Nguyen (2016) has the same results in her English class at Khanh 

Hoa University. In her study, minimal pairs are chosen as a key solution to her freshmen's 

pronunciation problem. After six-week treatment, not only do the students make enormous 

improvements, but they also take a favorable attitude to learning pronunciation. A similar result 

is found in Suhaili’s and Kurniawan’s research (2019) when they employ BINGO games in 

their classroom setting to improve their students' pronunciation. 

After reviewing the studies, the researchers conclude that while pronunciation games can help 

students improve their segmental features such as vowel and consonant production and boost 

their motivation to learn the subject, such games focus too much on monosyllabic words. 

Hence, the researchers wonder if any game might help them enhance their vowel sound 

production in multi-syllabic words. 

3. Methods 

Pedagogical Setting & Participants 

The study was carried out with the help of 32 English- majored freshmen at Van Lang 

University. They were randomly chosen and belonged to two different Phonetics classes 

scheduled by the Faculty of Foreign Languages. Therefore, one class was the control group, 



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52 
 

and the other was the experimental group in this study. 

Design of the Study 

The current paper was conducted using a mixed-method. Particularly, a pre-test, a post-test, and 

a questionnaire were employed to investigate the effects of the apps on students’ vowel 

pronunciation and their attitudes towards the apps. 

Tests 

To ensure the same level of difficulty, the pre-test and post-test resemble and consist of 14 

multi-syllabic words, as listed in Table 1. Each of the words was manipulated to determine the 

participants’ ability to pronounce one specific vowel. These words in the tests were selected 

from books for teaching English to L2 adult learners such as ‘American Accent Training’ by 

Cook (2017), ‘Clear Speech: Pronunciation and Listening Comprehension in North American 

English’ by Gilbert (2012), and ‘Master Mastering the American Accent’ by Mojsin (2009), and 

were stated to be the most commonly mispronounced words in Norman’s paper (2000). 

Additionally, these words were taught to the students during the course. The tests were 

administered for both groups in the class during school time. Each participant was asked to read 

aloud the words in 1 to 2 minutes. All of the students’ performance in the test was recorded and 

marked manually by two experienced teachers who are experts in teaching and researching 

English phonetics features. 

Table 1. List of words in the pre-test and post-test 

vowels words vowels words 

/i/ police /ɑ/ photographer 

/ɪ/ interesting /u/ canoeing 

/eɪ/ maintain /ʊ/ understood 

/ɛ/ vegetable /oʊ/ pronouns 

/æ/ Titanic /aʊ/ allow 

/ər/ purchase /ɔɪ/ annoying 

/ʌ/ comfortable /aɪ/ childhood 

Questionnaire 

The questionnaire applied only for the experimental group was designed based on Parreno and 

Eamoraphan (2017) and Berry (2021). The reason for choosing these two sources lies in that 

their questions were made to figure out subjects’ perceptions of digital games in EFL learning.  

To fit the purpose of the current study, the authors selected and modified these questions into 



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statements in the questionnaire consisting of two separated parts. In the first part, subjects’ 

personal information (e.g., course, class) was included. The information in this part was 

confidential and only served to ensure that students were in the experimental group. The second 

part presented six statements about students’ attitudes towards the mobile apps, and a five-point 

Likert scale (1- strongly disagree, 2- disagree, 3- no idea, 4- agree, 5- strongly agree) was used. 

Additionally, the reliability of the questionnaire was .825, which was an acceptable rate. 

Treatment 

A mobile application for pronunciation practice, namely Blue Canoe, served as the treatment 

for the current experiment. There are several reasons why this application was chosen for the 

research. First, it uses the proven 20-year-old brain-based methodology called Color Vowel 

System, which is based on Finger’s model (1985) and has been used in several renowned 

international education organizations such as the Peace Corps, the U.S. Department of State, 

Harvard, and Yale University. Another reason is that the multisensory and metacognitive 

approach (Odisho, 2007, 2014) is applied to Blue Canoe, which means learning vowels with 

the app is suitable for all different learning styles, including visual, auditory, and auditory 

kinesthetic styles.  

The free version of the mobile application was made to help activate our brain to learn sounds 

through images, music, and movement. More specifically, when L2 learners use the app, they 

are first trained to identify and memorize 14 English vowels by looking at the color vowel chart 

and listening to vowels which rhyme with different colors. For example, long I sound, and the 

phrase 'white tie' is in rhyme, while short I sound rhymes with the phrase 'silver pin.' After that, 

several quizzes with audios included in the app are used to teach the learners how important it 

is for the stressed syllable and stressed vowel quality to be in intelligible pronunciation. Finally, 

the learners can experience a fascinating and fun game called Color it Out to show how 

intelligible their pronunciation is with native English speakers' feedback included in the game. 

Data collection & analysis 

The tests and the questionnaire were delivered to the participants during school time. The 

procedure of the experiment lasted for five weeks (from week 3 to week 8, based on the school 

syllabus) and was summarised as follows: 

Week 1: Introducing the features of English pronunciation 

Week 2: Giving pre-test 

Week 3, 4, 5, 7, 8: Applying the treatment (Week 6: Mid-term test) 

Week 9: Giving post-test 

Week 10: Delivering the questionnaire via Google forms 

 



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From week 3 to week 8 (except week 6 when students had to attend a midterm test), the 

intervened class learned and practiced vowel sounds with Blue Canoe during two-hour lessons 

chorally, individually, and in pairs. At the end of each lesson, the students are asked to play the 

game Color It Out in the application with their friends in about 15 minutes, either in pairs or in 

small groups, so as to consolidate their knowledge about the vowel sounds. However, students 

in the control groups were instructed through the audio-lingual method. That is to say, the 

participants only listened and repeated after the models provided by the teacher right from the 

beginning of the lesson, and then they practiced with minimal pair drills and dialogues.  

Data collected were analyzed using SPSS 26.0. Before administering the treatment for the 

experimental group, independent samples t-tests were used to figure out whether there were any 

differences in the pre-test and post-test results in both groups. Then, after five weeks of applying 

the treatment for the experimental group, a paired sample t-test comparing the results of the 

tests was calculated for each of the groups. Data from the questionnaire was also computed 

right after the test analysis. 

4. Results/Findings and discussion 

The results from the pre-test and post-test in both groups indicated the significance of the 

treatment applied to the intervened class. A more detailed look at the figures for the test result 

analysis revealed that the students in the experimental group gained more improvement than 

the control group. 

Following the authors’ earlier discussion, with the intention of examining to identify whether 

there were any marked discrepancies in participated students’ pronunciation, independent 

samples t-tests and reliability were operated. The statistics clearly signified the consistency of 

the pre-test in both classes. Particularly, Cronbach’s Alpha of the pre-test was 0.702 for the 

control group and 0.78 for the intervened group, as shown in Table 2, Table 3, and Table 4 

below. 

Table 2. Reliability of pre-test in the control group 

Cronbach’s Alpha N of Items 

.702 14 

Table 3. Reliability of pre-test in intervened group 

Cronbach’s Alpha N of Items 

.78 14 

 

 

 



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Students’ accurate stressed vowels before the intervention 

Table 4. Results of independent t-test between the pre-tests in the two groups 

Variable M SD t df p 

Vowel production      

 Control group 6.0 2.55 -.986 32 .331 

 Experimental group 6.88 2.67    

Note. * The t and df were not adjusted because variances were equal. 

* Independent Samples t-test 

As can be seen from Table 4, the mean score of the students in the control group was slightly 

lower than that in the experimental group, at 6.0 and 6.88, respectively. However, the result of 

the independent samples t-test with the p-value, p = .331 > .05, illustrated no significant 

difference in the ability to produce accurate stressed vowel sounds of the students in the two 

groups. This means that before the treatment was applied, the two groups’ vowel production 

was similar. Therefore, the experiment fulfilled the criteria and was approved. 

Research question 1: What are the effects of using mobile games on learning stressed vowels 

among first-year English majors at Van Lang University (VLU)? 

Table 5. Results of pre-test and post-test paired samples t-test in the control group (CG) 

Variable M SD Correlatio

n 

Mean 

difference 

t df p 

Vowel production of 

CG 

       

 Pre-test 6.0 2.065 .510 -2.47 -4.388 16 .000 

 Post-test 8.47 2.549      

Note. Paired Samples t-test 

 

 

 

 

 

 



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Table 6. Results of pre-test and post-test paired samples t-test in the experimental group (EG) 

Variable M SD Correlation Mean 

difference 

t df p 

Vowel production of 

EG 

       

 Pre-test 6.88 2.214 .713 -4.29 -9.337 16 .000 

 Post-test 11.177 2.667      

Note. Paired Samples t-test 

Tables 5 and 6 show the results of a paired samples t-test between the pre-test and the post-test 

in the control and experimental groups, respectively. Regarding to the former, the mean score 

of the pre-test was 6.0 (M = 6.0, SD = 2.065) while that of the post-test was slightly higher, at 

8.47 (M = 8.47, SD = 2.549). The mean difference between the tests was -2.47 and the results 

of the paired-samples t-test (t = -4.388) was .000 (p = .000 < .05). These statistics illustrate that 

the distinction in the tests of the control group was statistically significant. Hence, it can be 

concluded that the participants gained improvement during the course without the treatment.  

For the control group, the mean difference between the mean score of the pre-test (M = 6.88) 

and that of the post-test (M = 11.177) was -4.29. In addition, the paired samples t-test had a p-

value of .000 (p = .000 < .05). Thus, there was a statistically significant difference in the test 

scores.  

The findings are consistent with those in Wilson’s study (2008), in which students made great 

progress in their English consonant and vowel pronunciation after they used mobile 

applications. The outstanding achievement in the student's score in the present study can be 

explained by the fact that the mobile application used includes practical activities and games 

and immediate feedback to users, as well as by the fact that it boosted student's learning ability 

with the combination of different senses such as hearing, feeling, and sight. With the application 

of the multisensory and multicognitive approach mentioned earlier, the pronunciation learning 

process of the experimental group took place in different stages, from listening to the vowels, 

storing them, comparing them with the ones in their psycholinguistic inventory to articulating 

the desired sounds. 

 

 

 

 

 



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Table 7. Results of independent t-test between the post-tests in the two groups 

Variable M SD Correlation t df p 

Vowel production        

 Post-test (EG) 11.177 2.214 2.706 3.684 32 .001 

 Post-test (CG) 8.47 2.065     

Note. Independent Samples t-test 

Another independent samples t-test was made between the data collected from the post-test in 

both groups to make the point clearer. In Table 7, statistics from t-test analysis (t = 3.684, p 

= .001 < .05) reveal a statistically significant divergence in the post-test scores between these 

two groups. Also, the mean difference of the group using Blue Canoe appeared higher than that 

of the other group. These figures indicate that using mobile pronunciation applications had a 

positive effect on participants’ vowel pronunciation.  

The result of this study supports Xiao and Luo (2017), who found that when students made use 

of mobile apps, they outperformed those who studied in a traditional phonetics class where 

students are taught with the audio-lingual approach in order to memorize patterns by drilling. 

However, such an approach seems to be more effective with children than adult learners 

(Odisho, 2007, 2014). Therefore, students in the experimental group experience the new 

approach in which they can control many senses to get information and produce the target 

sounds. This explains why there is a remarkable difference in the mean score of the post-test in 

the two groups, which means the treatment group with the use of the mobile application 

performs better than the control group learning with the traditional approach. Accordingly, 

students would improve their stressed vowel production more considerably if they learned 

pronunciation with a mobile application like Blue Canoe. 

Research question 2: Do students have positive attitudes towards using mobile games on 

learning vowels? 

A survey was delivered to intervened samples right after the post-test to examine students' 

viewpoints on mobile apps in learning phonetics. Data from the questionnaire were collected 

and analyzed via SPSS program 26.0. The reliability stood at 0.825, which was highly accepted 

(Table 8). Statistics from this survey (Table 9) indicate that most students had positive attitudes 

towards Blue Canoe, with a mean score of 3.956. Remarkably, most of the students strongly 

agreed that they would continue to use it in class (M=4.467), followed by the idea that they 

could hear the vowel sounds more clearly (M=4.267). Although they were generally on the side 

of that digital application use in class, not many students are for the points that the app could 

assist them in pronouncing words or getting feedback easily with the lowest mean scores of 3.6 

and 3.667, respectively. Regarding the two statements investigating whether they felt confident 

or were interested in manipulating the digital apps, the participants tended to reach agreement 



ACOJ-ISSN 1936-9859 AsiaCALL Online Journal Vol. 12; No. 4; 2021 

58 
 

on level (M= 3.8 and 3.93, correspondingly).  

Overall, this finding is similar to the one by Nguyen (2015) and by Ghounane (2019), where it 

was found that students had a positive attitude to the use of mobile games or mobile 

applications. With the use of Blue Canoe, students felt more confident and would continue to 

use it in the future, which shows that the application has provided them with both satisfaction 

and interest. Obviously, the application is easy to install on a mobile phone, which they can 

carry anywhere and do some practice at any time. The fact that the students wanted to keep 

using them with a mean score of 4.47, which is remarkably high, shows the possibility of 

continuous use for pronunciation improvement. One of the reasons for the interest in the 

application is that they could get helpful feedback from the application when they produced the 

sounds. Instant feedback is one of the essential features of a mobile application game (Agusalim 

et al., 2014); therefore, in this study context, the feedback students got immediately made them 

feel happy and keep track of their study progress. Moreover, students found the sound of the 

app clear to hear, with the second-highest mean score of 4.27, which indicates that the sound 

system's quality in the app gets students involved in the activities they do with it and creates a 

sense of satisfaction. Ultimately, they felt they pronounced the words more easily. 

Table 8. Reliability of the questionnaire 

Cronbach’s Alpha N of Items 

.825 6 

Table 9. Descriptive statistics on students’ attitudes towards the mobile apps 

 N Range Minimum Maximum Mean 

feel confident 16 3 2 5 3.80 

want to continue using the apps 16 2 3 5 4.47 

can hear the sound more clearly 16 2 3 5 4.27 

can pronoun words more easily 16 4 1 5 3.60 

be interested in the game 16 3 2 5 3.93 

can get useful feedback 16 4 1 5 3.67 

Valid N (listwise) 16     

 

 

 



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59 

5. Conclusion 

In conclusion, the current research was conducted to investigate the effects of using mobile 

apps in enhancing English vowel pronunciation among EFL majors at Van Lang University and 

their attitudes towards using the apps in Phonetics class. The results showed that there was a 

considerable difference in the post-test results between the control group (M=8.47) and the 

experimental group (M=11.177). In addition, the independent samples t-tests (p= .331 and .001) 

and paired samples t-tests (p=0) in the pre-test and the post-test indicated that the subjects were 

treated fairly during the experiment. Particularly, students in the intervened class could 

pronounce better at difficult sounds with more accurate stresses (e.g., Titanic, purchase) than 

those in the other class. Therefore, it was concluded that using a mobile app like Blue Canoe 

has enabled students to perform better in pronouncing English vowels. This is because it 

facilitates the combination of different senses in learning from students. 

For this reason, English teachers should apply the multisensory and multicognitive approach in 

their teaching pronunciation to reach a better possibility of success. More specifically, the 

implementation of a mobile application like Blue Canoe can be recommended in the classroom, 

especially in the pronunciation class. Instead of using traditional games or activities that only 

adopt an audio-lingual approach, teachers should take the above-mentioned approach into 

account to get the best from students’ learning practice. For students, the use of this application 

is highly suggested for its easy accessibility and effectiveness.  It is suitable for varied kinds of 

learners, for it activates different senses in a learner. Besides, based on the result of the 

questionnaire (M=3.956), it was stated that the participants had positive attitudes towards using 

the mobile app in practicing vowel sounds. This finding confirms the potential for utilizing the 

app in a long-term period, which can even result in better performance in students’ vowel 

articulation. 

Although the paper has shown some significance in the field, limitations could not be avoided. 

Firstly, the time for the treatment only lasted for five weeks, and there were only 16 participants, 

so the results could not be generalized. Secondly, the test was focused on American vowels; 

thus, the results were not applicable for other English language varieties' sounds. Finally, only 

a questionnaire was administered in the research, which was not enough to investigate all of the 

students' attitudes in depth. 

In connection with suggestions for further research, the following issues should be taken into 

consideration. First, there should be a larger number of participants so that the results can be 

more generalized.  Furthermore, it is highly recommended that other features of English 

pronunciation should be included in future investigations. Regarding tools for measuring 

learners’ attitudes towards the treatment, questionnaires, interviews, and observations should 

be used for gaining more students’ detailed opinions about manipulating mobile applications in 

ESL/EFL classrooms. 

 

  



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Biodata 

Huy Cuong Nguyen has been working as an English lecturer in the Faculty of Foreign 

Languages, Van Lang University for 5 years. He teaches not only English skills but also 

English for specific purposes to English majors. Carrying out research on applying new 

teaching techniques to enhance students’ pronunciation is his particular interest. 

Ha Thi Nguyen is currently a lecturer of English in the Faculty of Foreign Languages, Van 

Lang University. She mainly teaches English skills to mainstream students. She is particularly 

interested in doing research on how to integrate Internet-based applications in English 

Language Teaching and on assessment in English teaching. 

Thao Quang Le has been teaching English as a foreign language for 9 years. He is now a 

lecturer in the Faculty of Foreign Languages, Van Lang University. He gives classes on four 

English skills and teaches courses in English linguistic components. He takes an interest in 

conducting research into L1 instructions in the classrooms and language assessment. 

 

http://doi:10.4304/jltr.3.4.801-805
http://doi:10.4304/jltr.3.4.801-805

