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In this activity, learners explore how hot and cold water move. Learners observe that temperature and density affect how liquids rise and fall.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this math activity, learners pretend there is a special store that lets you pay for toys by their weight in pennies.

Create an instrument that you don't play--you just listen to it through tubes of various lengths.

In this activity, learners will engineer their own weather vane. This activity includes step-by-step instructions with pictures and a "What's Happening?" section explaining how the activity worked.

Look at pictures through different color filters and you'll see them in a new way. People have used color filters in beautiful photography or sending secret messages.

Create your own spinning top, and explore color, shapes and spinning. This activity contains instructions for making your spinning top, and tips on how to design and decorate it.

In this activity, learners explore what makes a boat float and sink. They examine and test various objects to determine why objects float or sink.

In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky.

In this quick activity, learners explore static electricity using a plastic comb, wool cloth, puffed rice, and a plastic bag.

In this activity (located on page 3 of the PDF), learners investigate the way water moves and how we can control and direct water.

As a group, learners investigate three packages which are all the same size and shape, but have different contents. One is filled with foam, one is filled with wood, and one is filled with metal.

This is an activity exploring color and color mixing.

In this physics activity, learners will explore buoyancy.

In this activity, learners will make a model rocket to test the phrase "what goes up must come down." Learners will power their rockets with air pressure, and soon discover the effects of air resistan

Everybody loves messy science, and Flubber is a favorite of both COSI employees and guests!

In this activity (16th on the page), learners play a variation of the "I Spy" game to explore color. Learners work in teams with each team assigned a color.

Create a painting by blowing air out of a straw. Push liquid acrylic paint around on some watercolor paper by aiming short bursts of air onto the paint puddle.

Everybody loves bubbles, and this is the best bubble recipe ever!

In this math activity, learners experiment with the concept of symmetry.