Junk drawer engineering : 25 construction challenges that don't cost a thing /
Children love challenges, especially ones that involve hands-on experimentation and friendly competition. Can they build a bridge using only pasta and glue, one that a toy car can drive both under and over, and is sturdy enough to carry a considerable weight? Can they construct a "roller coaste...
|Main Author:||Mercer, Bobby, 1961-|
Chicago, Illinois :
Chicago Review Press,
x, 212 pages : illustrations ; 23 cm