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This activity is about the mural making process done about 9,000 years ago in Catalhoyuk, Turkey.

In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

Cardboard Automata are a playful way to explore simple machine elements while creating a mechanical sculpture.

In this activity, learners explore electronics and motion by making a Scribbling Machine, a motorized contraption that moves in unusual ways and leaves a mark to trace its path.

In this outdoor activity, learners work in pairs using their senses—especially touch—to learn more about individual trees.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.

In this two-part activity, learners investigate buoyancy, density and surface area as well as biodiversity and the relationship between the structure and function of organisms.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.

In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

Make a one-string "guitar" by stringing a cup with some fishing line. You amplify the plucking of the string by placing a piezo contact microphone and mini battery powered amplifier inside the cup.

In this activity, learners create 3D geometric shapes using straws and pipe cleaners.

In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use.