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Learners build a simple one-cell battery and use an ammeter to measure the flow of current.

In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

In this activity, learners discover that atoms and ions of different metals will change places.

Visitors observe a graduated cylinder with a golf ball floating about halfway in liquid. The bottom half of the cylinder contains a concentrated solution of salt.

In this physics demonstration, learners will be surprised when a lemon slice appears to magically levitate within a pint glass.

In this activity, learners will explore light and rainbows with this easy setup! Learners will only need a cup of water, some paper and a flashlight.

In this activity, learners create a "mini sky" in a glass of water in a dark room.

Visitors use heat to shrink samples of polystyrene. They compare samples from containers that were shaped in different ways during manufacturing.

Visitors incrementally increase the amount of iodate in three different test tubes containing the same amount of a starch solution.

In this activity, learners are challenged to lift a floating ice cube out of a glass of water using just one end of a piece of string.

In this optics activity, learners use glass and water to demonstrate total internal reflection (TIR).

Learners analyze mixtures of dyes using filter paper chromatography. They place spots of the different dyes at the bottom of a piece of filter paper, and hang the paper to touch the surface of water.

Create a simple dual pendulum and get them to swing in identical ways. This is a simple, low cost, activity produced by the Exploratorium.

In this activity, learners try to blow up a balloon hanging inside of an empty bottle.

Learners create a small explosion by collecting hydrogen and oxygen gas together and squeezing them into a flame.

In this activity, learners discover what happens when they crush wintergreen-flavored candies in a very dark room.

In this activity about phase change and condensation, learners boil water in an empty pop bottle in the microwave.

In this activity, learners will test soil content using their sample, some water and a container that seals.

This fun and simple hands-on astronomy activity lets learners explore what happens when a star explodes.

In this activity, learners explore motion and airflow by setting two aluminum cans on their side and blowing air in-between them.