id	keyword
american_scientific_journal-4320	learning
american_scientific_journal-4320	course
american_scientific_journal-4320	biology
american_scientific_journal-4320	students
american_scientific_journal-4320	university
american_scientific_journal-4320	training
american_scientific_journal-4320	environment
american_scientific_journal-4320	teachers
american_scientific_journal-4320	design
american_scientific_journal-4320	model