The Invent To Learn Guide to Fun features an assortment of insanely clever classroom-tested “maker” projects for learners of all ages. Josh Burker kicks classroom learning-by-making up a notch with step-by-step instructions, full-color photos, open-ended challenges, and sample code. Learn to paint with light, make your own “Operation Game,” sew interactive stuffed creatures, build “Rube Goldberg” machines, design …