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In this activity, learners build a machine made of craft sticks to multiply the levering motion of their hands and create a device that bends and extends.

In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use.

In this activity, learners build a figure that moves and "comes to life" when they pull its string.

In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials.

In this activity, learners explore how rescue devices are designed to aid professionals during emergency situations.

In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

In this activity, learners build their own construction cranes using tongue depressors and pushpins.

In this activity, learners create a working model of a nail clipper. This activity helps learners learn the basic principles of simple machines, engineering design and model building.