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In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.

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

Using indirect methods, learners determine the shape and size of a piece of carpet hidden under a piece of plywood.

In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners test if objects repel or absorb water.

Learners design their own experiment to determine which M&M color dissolves the fastest in water.

Learners initially test to see how many drops of liquid (water, rubbing alcohol, and vegetable oil) can fit on a penny.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.