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This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.

In this lesson that includes hands-on activities and demonstrations, learners discover that it is the tilt of the Earth's axis (not its proximity to the sun) that causes the seasons.

In this activity, learners create models of erosion and floods and learn to recognize both in their environment.

Through doing these hands-on activities, learners explore the environmental consequences associated with fossil fuel usage.

In this activity, learners are introduced to robotic submarines called gliders. Learners make “gliders” from plastic syringes and compare these to Cartesian bottles and plastic bubbles.

In this activity, learners investigate how increased carbon dioxide (CO2) emissions from the burning of fossil fuels is changing the acidity (pH) of the ocean and affecting coral reefs and other marin

This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

In this space science activity, learners explore transits and the conditions when a transit may be seen.

Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.

In this activity (on page 7), learners explore the meaning of a "carbon sink." Using simple props, learners and/or an educator demonstrate how plants act as carbon sinks and how greenhouse gases cause

In this activity, learners use a compass, powerful magnet, and copper magnet wire to build a special generator known as a dynamo.

This experiment is designed to illustrate how fluids, including water, have the ability to flow.

This is a classic exercise for visualizing the scale of the Solar System.

In this activity about combustion and energy, learners observe a burning candle in a sealed jar and the burning of white sugar.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.

In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.

In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

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