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In this ecology activity (page 8 of the PDF), learners explore how to filter contaminated water using a variety of materials.

This activity has learners observe water and compare it to other liquids.

Does yeast breathe? Find out by watching how plastic bags filled with yeast, warm water and different amounts of sugar change over time.

In this activity, learners add food coloring to hot and cold water to see whether heating or cooling affects the speed of water molecules.

In this math lesson, learners predict, interpret, and sketch graphs of functions related to the shapes of bottles. A measure of water is poured into a container.

Learners create a model of a wetland to observe how it absorbs and filters water from the environment.

In this wintertime outdoor activity, learners role play wolves tracking their prey by following scented trails.

In this activity, learners design a device to solve a problem: how to get a ball out of a drain pipe.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

Learners apply their knowledge of heat transfer to design two cans - one that will retain heat and one that will cool down quickly.

In this activity, learners try to float ink on the surface of water to create a pattern and then capture it with absorbent paper.

In this activity about the human heart (on page 5 of the PDF), learners work in teams to simulate the volume of blood moved through the circulatory system by transferring liquid into--and through--a s

In this activity, learners explore how objects can have positive, negative, or neutral charges, which attract, repel and move between objects.

Learners conduct an experiment to determine the rate at which two materials, sand and water, heat up and cool down.

In this activity related to microbes, learners use water drops and hand lenses to begin the exploration of magnification. This activity also introduces learners to the microscope.

In this activity, learners are asked to examine the differences between two materials in a pair.

In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved

In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.

In this activity, learners investigate the food, water, and space needs of common livestock animals.

In this group activity, learners act out key stages of the "ocean carbon cycle" (also known as the "carbonate buffer system") through motions, rearranging blocks and team tasks.