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In this activity, learners compete in a game to cover the most area by drawing randomly-generated rectangles on graph paper.

In this design challenge activity, learners build a four-stringed instrument that can play a tune.

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

Learners will build a homemade pump using a balloon, a mason jar, and some straws.

In this activity, learners will engineer a roof using simple materials to protect a construction paper person from a rainstorm.

These puzzles use four colors of socks in a drawer to get learners thinking algebraically.

This activity shows how our experience of the Sun changes with time and location. The sun dagger at Chaco Canyon is thought by many to be a sort of ancient timekeeping device.

In this activity, learners use household materials to investigate and explore their ability to smell an odor.

In this activity, learners create virus models, including nucleic acid and proteins, using simple materials. This resource includes information about virus structure and gene therapy.

Learners build devices from rubber bands to test for invisible air pollutants.

In this activity, learners will explore how different colors of lights interact with objects around them. Will a blue object stay blue with a red filter?

In this activity, learners explore how an electromagnet works by making a simple one. Using this knowledge, learners design a diagram to make a working speaker using household materials.

In this game, learners try to find nano-related objects on a game board. Learners investigate the different ways nano is in the world around us.

In this demonstration (9th on the page), learners explore eyewitness memory and how memories differ amongst individuals. While the rest of the group is minding their own business (i.e.

In this activity about saturation (page 1 of PDF under SciGirls Activity: Sand Dunes), learners will build a series of sand castle towers using a 16 oz cup.

In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.

In this quick activity (page 1 of PDF under SciGirls Activity: Lift Off), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints.

In this activity, learners recreate the lunar phases using the frosting from Oreo® cookies and place the phases in order. Round cream cheese crackers can also be used if cookies are not an option.

In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians.

In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.