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Directed by instructional cards, learners kinesthetically model cell communication by acting as components in a cell signaling pathway.

In this activity, learners build a speedboat using paint paddles, a propeller, and film canister. Learners attach a simple circuit and motor to the boat to power the propellers.

In this investigation, learners explore the force known as buoyancy by placing various objects into water and observing how they behave (for example, which sink more quickly, which float, how much wat

In this activity about electricity, learners identify parallel and series circuits. First, learners examine and label diagrams of complete circuits.

Learners drop two different masses of play dough and observe how long it takes them to hit the ground.

In this math activity (Page 17 of the Play Ball! PDF), learners play a game of "baseball" and analyze the results of the game.

In this genetics activity, learners discover how to extract DNA from green split peas.

This activity shows learners how computers use numbers to represent pictures. A grid is used to represent the pixels (short for picture elements) of a computer screen.

In this activity, students will learn some key information about a San Francisco native animal and then write a firsthand account of their experience from the perspective of that animal in the time be

This activity attempts to clear up the common misconception that deserts are always hot, totally dry, and uninhabitable.

This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.

In this math lesson, learners play two different games to help them understand coordinates. First, learners read the book, "The Fly on the Ceiling," by Julie Glass.

Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.

In this activity, learners build a seesaw powered by magnets.

This lesson guide includes six simple and quick activities to help learners better understand Bernoulli's Principle.

Learners design their own experiment to investigate how pollution diffuses through ground material.

In this activity, learners examine ways that Native Americans of the Southwest express their relationship with nature through art.

In this hands-on activity, learners will become familiar with the special adaptations of rainforest plants and discover the conditions needed for tropical trees to survive along with what can impinge

This activity helps students learn how computers "compress" text by identifying repeating patterns of letters, words, and phrases.

In this activity, learners listen to songs and decode hidden messages based on the same principle as a modem. As a final challenge, learners decode the binary messages in a music video.