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In this activity, learners build water-propelled engines from soft drink cans.

In this engineering design activity, learners will design, test, and build a “haunting machine” to solve a Sherlockian mystery.

Students design and build their own parachutes in this hands-on engineering project.

In this activity, learners explore the design of tall structures such as skyscrapers and telecommunication towers.

Learners participate in a variety of activities modeling different disabilities.

In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

In this engineering challenge, learners design and build a crane out of cardboard to see how heavy a load it can lift.

In this activity, learners are invited to imagine the park of their dreams!

In this game (on pages 14-21), learners explore how each human being inherits genetic traits such as eye color.

Make a model city happier with LEDs, circuits, motors, and batteries! Groups can think, discuss, design, and build what would make a community happy. Kids can work as part of a team or on their own.

This design challenge is an open-ended exploration of linkages, a group of parts connected by hinges, and the types of motion they can create.

Build and test a scale model of a rainforest canopy walkway.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.