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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 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

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

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

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.