Flying Machine 1st-8th Learners build a rubber-band-powered flyer, draw and cut their own symmetrical wings, and launch it again and again to see how each design fli... $8.95 Blendie Pre-K-8th Learners build a spinning top, test which designs spin best, then color it so red, yellow, and blue blur into brand-new colors as it spins. Ev... $8.95 Monster Claw 3rd-8th Learners build a cardboard claw and power it with air, using pneumatics, so pushing one piston opens and closes the claw at the other end. It ... $8.95 Eyelusions 2nd-8th Learners build a motorized spinner and draw two half-pictures that merge into one image when it spins. It is a modern take on the thaumatrope,... $8.95 Art Machine K-5th Art Machines are kinetic sculptures designed and built to move. Learners connect levers and fulcra into a machine that stretches out and pulls... $8.95 Wind-Up Vehicle 2nd-8th Learners build a car powered by a wind-up spring, then take it apart and invent a vehicle all their own. There are no batteries, no wiring, an... $8.95 Hypnotizers K-5th Learners build a wind-up machine that draws hypnotic spirals by itself. They choose the colors and placement, and stored spring energy does th... $8.95 Crankie Contraption 1st-8th Learners build a hand-turned cardboard theater and illustrate a story that scrolls across its screen like a movie. Crankies come from a long t... $8.95 Mazes K-8th Learners design a ramp path so a ball zigs, zags, and zooms into a hoop, then connect their maze to a partner's to build one long run. It is a... $8.95 Drawbot 2nd-8th Learners build a small foam machine with marker legs that vibrates across paper and makes its own art. Then they rearrange the parts to change... $8.95 Scene Machines 2nd-8th Learners build an automaton, a hand-cranked machine where turning a handle brings a scene to life. They invent the characters, art, and story,... $8.95 Monster Mouth K-5th Learners design their own monster and give it a pneumatic, air-powered mouth that opens and closes as they push and pull. Character design, st... $8.95 Screen Machines 1st-8th Learners build a cardboard screen with wooden scroll handles, write and illustrate a story on a paper strip, and crank it to play like a tiny ... $8.95 Straw Structure Pre-K-8th Learners connect jumbo paper straws into shapes, then into towering 3D structures as tall as they are, then team up to reach the ceiling. It t... $8.95 Linkages K-8th Learners connect cardboard levers and pivots into moving mechanisms, then hide them inside creatures and characters, like animals that dance a... $8.95 Strawbot 2nd-8th Learners build a straw robot with a motor and an off-center weight and watch it shake and skitter across the table. Then they turn it into a S... $8.95 Electric Vehicle 3rd-8th Learners wire a motor and gear into a working electric car and watch it drive. Swapping two wires reverses the polarity and sends it backward.... $8.95