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

In this interactive board game, learners "hire" different types of scientists to help canine character Ruff Ruffman solve unusual problems.

In this activity, learners are challenged, using everyday objects, to create simple machines to complete specific tasks.

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.