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In this activity, learners explore the engineering and principles behind working elevators.

In this lesson, learners will practice graphing and statistically analyzing data.

In this activity, learners light an LED with five cents. Learners use two different metals and some sour, salty water to create a cheap battery.

In this activity (on pages 20-23 of PDF), learners build a model of a power plant using simple materials.

In this activity, learners build water-propelled engines from soft drink cans.

This activity aims to stimulate discussion on the question of whether computers can exhibit “intelligence,” or are ever likely to do so in the future.

In this activity, learners imagine what the world might look like if we could build an elevator to space!

In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.

Learners will follow a specific process to make their own paper using scrap paper, newspaper, or junk mail.

In this thought-provoking activity, learners plan a hypothetical project to build and operate wind turbines in their community.

In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.

In this game (on pages 14-21), learners explore how each human being inherits genetic traits such as eye color.

In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

In this activity about global climate change, learners will conduct an experiment and collect data to compare the amount of carbon dioxide (CO2) in four different sources of gases.

Learners observe and discuss a vacuum cleaner as a model of a baghouse, a device used in cleaning industrial air pollution.

In this environmental science activity (page 4 of the PDF), learners use vinegar and chalk to observe the effect of acid rain on various building materials and plant life.

In this activity, learners gain a better understanding of how household/school waste breaks down in a landfill. Learners collect trash and then create miniature landfills in 2-liter bottles.

Learners participate in a variety of activities modeling different disabilities.

This activity about cryptographic techniques illustrates how to accomplish a simple, but nevertheless seemingly impossible task—making a fair, random choice by flipping a coin between two people who d

In this outdoor activity, learners plan a simple foot path and create an environmental impact study of the natural area where the path would be.