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In this chemistry meets cooking activity, learners compare the stability of egg white foams with various additives.

In this activity (located on page 5 of PDF), learners work in groups to create dig sites for display.

In this activity, learners experiment with gear motion to understand how gears work to change the amount of force, speed, or direction of motion in machines.

In this activity, learners will engineer three different parachutes to test how well each one works.

In this activity, challenge learners to keep an ice cube from completely melting in 30 minutes. Learners engineer a box or wrap to prevent an ice cube from melting.

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

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

In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.

In this activity (on pages 11-12 of PDF) learners create models of lava layers that have formed on the moon.

In this activity, learners design a therapeutic agent to image and/or cure various diseases in the respiratory system.

In this hands-on activity, learners build their own kaleidoscopes and explore how light can reflect of off surfaces such as mirrors, to produce beautiful patterns.

In this activity, learners build rockets and shoot them into the air by stomping on the plastic bottle launchers.

Learners will do an experiment to determine which type of paper is strongest while focusing on variables and collecting data.

In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.

In this activity, learners will repurpose an old t-shirt to create their own yarn or string.

In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan.

This game uses a modified Uno deck to review concepts related to stem cell research and diabetes.

In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.

In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

These math posters have questions written on them, such as: How many colors can you name in a minute? or How many seconds can you balance on one foot?