(Paperback)

(Paperback)

(Paperback)

"Here are more than 50 great hands-on experiments that can be performed for just pennies...or less. Each project has a materials list, detailed step-by-step instructions with illustrations, and a brief explanation of the scientific principle being demonstrated--atoms, compounds, solutions, mixtures, reactions, thermodynamics, acids and bases, and more."--Amazon.com.

(Paperback)

Subtitle on front cover: 50 awesome activities that don't cost a thing.

(Paperback)

"In Junk drawer geometry, educator Bobby Mercer provides readers with 50 creative geometry project ideas for engaged learning. Each activity includes a materials list and detailed, step-by-step, instructions with illustrations"--

(Paperback)

(Paperback)

With 35 easy-to-build and fun-to-fly contraptions that can be used indoors or out, this project book contains instructions for building rockets, gliders, boomerangs, launchers, and helicopters for little or no cost using recycled materials. Illustrations.

(Paperback)

Author and physics teacher Bobby Mercer shows how to use mousetraps, rubber bands, chemical reactions, gravity, and air pressure to power fast-moving vehicles. Each of the 25 easy-to-build racecars is constructed for little or no cost using recycled and repurposed materials.