The Exploratorium

In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.

Spin a short piece of PVC pipe that's been marked up, and watch a triangle appear. Enjoy this optical illusion from the Exploratorium's Science Snack series.

In this activity, learners use gelatin as a lens to investigate the properties of laser light.

In this activity, learners use their hands as tools for indirect measurement.

In this web-based activity, learners try to figure out who in an online chat room has their matching puzzle piece.

In this activity, learners use basic measurements of the Earth and pieces of rock and iron to estimate the mass of the Earth.

Sound changes pitch relative to how you or the source of the sound is moving. Use this simple activity developed by the Exploratorium to experience the Doppler Effect yourself!

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

Get all wrapped up in a lesson about skin!

This Exploratorium activity explores size and scale. Through four levels of screen sizes, learners can sort out objects of different sizes.