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In this yummy biology activity (page 3 of the PDF), learners participate in a demonstration of natural selection.

In this activity, learners will explore basic information about thermodynamics by experimenting with ice. Learners will compare ice melting rates on metal pans or plastic cutting boards.

This is an activity about lung capacity. Learners will measure their own lung capacity using a homemade spirometer.

This activity was designed for blind learners, but all types of learners can use it to investigate how different materials vary in their conduction of heat.

Did you know that a Slinky makes a handy model of earthquake waves?

In this outdoor activity, learners review the parts of the synapse and their functions by playing a game.

In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink.

In this activity related to magnetism and electricity, learners discover that a magnet falls more slowly through a metallic tube than it does through a nonmetallic tube.

In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.

In this activity, learners will build a model of a nebula using cotton balls and colored water. Astronomers photograph nebulas and add colors to provide information about the nebula's composition.

In this activity, learners capture and observe planaria, which are worms that eat tiny pond critters.

This activity was designed for blind learners, but all types of learners can explore the three states of matter by examining tactile models that illustrate the characteristics of particles in each sta

In this activity, learners "dance" (move back and forth at varying speeds) by reading a graph. This is a kinesthetic way to help learners interpret and understand how motion is graphed.

In this activity, learners use pop-beads to understand the characteristics and properties of polymer chains.

Construct a simple battery that's able to power a small light or motor out of foil, salt water, and charcoal. A helpful video, produced by the Exploratorium, guides you along on this activity.

In this lab exercise, learners explore diffusion, cell membranes and particle size using beets and three alcohols.

If you have access to a copper metal tube, this activity does a great job demonstrating what happens to matter when it's heated or cooled. This activity requires some lab equipment.

In this activity, groups cut out and sort cards showing items recovered from a crash landing on the Moon. The 12 items range from food and water to rope and matches to a self-inflating life raft.

Learners set up three different bowls, each with a different mass of oatmeal. Learners monitor the temperature of the oatmeal and find that larger masses take longer to cool.

In this activity (on pages 4-5), learners make fake snow by adding water to the super-absorbant chemical from diapers, sodium polyacrylate.