id	keyword
ger-304	students
ger-304	problems
ger-304	mathematics
ger-304	education
ger-304	project
ger-304	new
ger-304	participants
ger-304	school
ger-304	learning
ger-304	activities
ger-304	richness
ger-304	manuel
ger-304	website
ger-304	teachers