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In this activity (on pages 23-29), partners use the Plant Traveler Cards, along with a world map and map worksheets, to follow plants such as cassava, chocolate and coffee that grew first in one part

In this activity, learners perform a simulated blood test procedure.

In this activity, learners experience firsthand how marine animals' adaptive coloration camouflages them from prey.

Did you know that the water we use today is the same water found on Earth millions of years ago? The Earth constantly uses and recycles water in a process called the water cycle.

In this activity, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife.

Learners explore the relationship between energy consumption, population, and carbon emissions in the countries of the Americas.

In this hands-on activity, learners discover the similarities and differences between a vertebrate and invertebrate by dissecting a perch and a crawfish.

This activity was designed for blind learners, but all types of learners can use it to learn to differentiate between qualitative and quantitative observations and to practice data collection.

In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

In this activity, learners work in teams to construct human lung models from small plastic beverage bottles and balloons.

In this activity, learners act as epidemiologists by mapping the prevalence of HIV/AIDS worldwide.

In this environmental health activity, learners investigate their own vital lung capacities.

Some animals can swallow food whole, but humans have to chew. In this activity, learners will investigate what saliva does chemically to food before we even swallow.

In some parts of the world, lakes freeze during winter. In this activity learners will explore water’s unique properties of freezing and melting, and how these relate to density and temperature.

In this activity about afterimages, learners explore what happens when receptor cells called cones in your eye's retina get tired.

In this STEAM activity, learners create a "pixel tube" to explore reflections of light and color mixing.

Lakes, streams and other freshwater bodies are a habitat for lots of living things, big and small.

In this activity related to dinosaurs, learners explore why animals live in families. Learners discuss and identify animals living in families or groups from images and photos.

In this activity, learners make their own heat waves in an aquarium.

In this activity, learners use a microscope to examine three different microbes: bacteria, yeast and paramecia. Educator will need to prepare the yeast solution one day before the activity.