id	keyword
ger-412	algebra
ger-412	grade
ger-412	students
ger-412	teachers
ger-412	mathematics
ger-412	achievement
ger-412	countries
ger-412	topics
ger-412	states
ger-412	education
ger-412	otl
ger-412	united
ger-412	equations
ger-412	botswana
ger-412	study
ger-412	level