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In this math lesson, learners apply the Monte Carlo method of simulation to determine a reasonable estimate.

This activity has learners observe water and compare it to other liquids.

In this activity about human anatomy (page 16 of PDF), learners construct a model arm and discover how muscles and bones work together to achieve efficient movement.

Learners develop an understanding of air pressure in two different activities.

This is an activity about the behavior of light. Using simple, everyday objects, learners will discover that light moves in straight lines until acted upon by another object.

In this chemistry demonstration, learners will discover that phenolphthalein is an acid/base indicator. One learner will read a poem about four witches making a potion.

In this activity (on pages 9-14), learners dissect a real flower -- the kind of work botanists do.

In this two-part activity, learners compare and contrast a variety of life cycles to better understand different organisms and how they develop.

Learners investigate how the temperature of water affects its density.

In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.

In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.

In this activity, one person acts as a human robot while another acts as their developer by programming their actions.

In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

Did you know that using a lens one can bend light to make pictures of the world? It's true!

In this activity (page 5 of pdf), learners explore the relationships between the shape and structure of a shark's teeth and the food it eats, and then create their own shark tooth from clay.

With little more than a flashlight, a straw, and a plastic lid, make an observatory so you can see the amazing colors in bubbles.

In this activity, young learners will make their own flower seed nursery in an egg carton.

In this activity, leaners explore building techniques by recreating the story of The Three Little Pigs.

Learners see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float.

In this activity, learners will explore surface tension, what it is, and how we can change it.