The Exploratorium

In this activity about light and reflection, learners discover that what you see is often affected by what you expect to see.

In this activity, learners build a tool called an inclinometer that can find the height of any distant object, from a tree to the North Star.

This activity shows you how to make a mold terrarium using a jar and leftover food.

With a coffee filter, a black marker, and a cup of water, discover the secret colors hidden in black ink.

In this activity, learners explore how different deodorants work. Learners treat agar plates with different types of deodorants and compare the bacteria growth on the plates to the control sample.

In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils.

In this activity, you'll make an electric motor--a simple version of the electric motors found in toys, tools, and appliances everywhere.

In this activity, learners use food scraps from the kitchen to grow new vegetables.

In this activity, learners explore a surprising method for calculating the mathematical constant pi, known as Buffon's Needle.

In this activity about light and reflection, learners use a special device called a Mirage Maker™ to create an illusion.