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

Learners work in pairs to create three simple types of bridges, a beam bridge, an arch bridge, and a suspension bridge.

In this activity, learners construct speedy vehicles made out of paper plates and powered by twisted rubber bands.

In this activity, learners build an old-fashioned paddle boat out of simple materials.

In this activity, learners explore the structural strength of triangles by creating their own free-standing geodesic dome out of plastic straws.

In this challenge, learners make a helium balloon hover in one spot and then move it through an obstacle course using air currents.

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

In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.

Learners explore the field of civil engineering by making a bridge using spaghetti as their primary building material.

In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.

In this activity, learners explore work, forces, simple machines, and construction. This lesson guide includes simple ways to demonstrate these principles as well as hands-on activities.