"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 coaster" from recycled cardboard tubes in which the marble "car" jumps a track to land safely at its final destination? And can they create a device to safely catch...

Algebra as a hands-on subject? With this helpful resource, you can simplify equations using pennies and nickels, use aluminum foil to multiply polynomials (the FOIL method), create coordinate graphs with candy, examine exponential decay functions with a bouncy ball, and much more. Junk Drawer Algebra proves that you don't need high-tech equipment to comprehend math concepts-just what you can find around the house or in your recycling bin. Each of...

Kids of all ages can use recycled and repurposed household items to complete exciting and green ecology experiments Junk Drawer Ecology is a hands-on guide to saving the planet. Fun, free science activities help kids of all ages learn about the science of our planet's ecology. The environment is changing every day, and we can help slow that change. Using free or low-cost things children already have around their homes, these activities are perfect...