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In this engineering activity, learners design parachutes to give toy figures safe landings. This activity is great for practicing an important STEM skill--changing only one variable at a time.

Learners conduct two activities to investigate two properties of liquids: density and viscosity. In a clear container, learners stack 7 different liquids which will layer according to their density.

In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

In this design challenge, learners will create wind-powered contraptions to transport a load, such as a cupcake or another small object, and test to see if they work.

In this activity, learners use the design thinking process to design and build their own aqueduct, or water bridge.

Learners work in groups to construct bridges using stale marshmallows and toothpicks.

In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.