Some people might frown on toys in the classroom.  I see SCIENCE written all over this K’NEX Roller Coaster Building Set.  I’m guessing grades 3 and up.

To enter, like the K’NEX FB post (link below) and comment on the same K’NEX post (not here) with your response to to their posted question.

FIVE random winners announced May 2, 2014

ENTER HERE