id	keyword
ger-572	test
ger-572	students
ger-572	science
ger-572	inquiry
ger-572	profile
ger-572	classes
ger-572	education
ger-572	competence
ger-572	time
ger-572	experiments
ger-572	school
ger-572	literacy
ger-572	results
ger-572	hypotheses
ger-572	study