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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

This resource contains ideas and brief instructions on how to build animals out of construction paper and other simple materials.

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

This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo.

In this activity, learners construct a traditional handicraft toy that illustrates a motion commonly associated with violins and earthquakes.

In this activity, learners build a mini crank machine to make a bird "fly." This engineering activity introduces learners to automata, rotational motion, cranks and cams.

In this activity, learners will build a bee hotel for pollinators. Learners will explore building and ecology through this activity.

In this engineering design challenge, learners make a bird and then control its flight with attached strings.

In this activity, learners examine nanoscale structures of common things.

In this activity, learners will discover how fossils are dug out of the earth by carefully exposing treasures hidden in an artificial rock that is easily made at home.

In this activity, learners use maps to locate the Arctic region and use a word game to discover the types of resource people need to survive in the extreme climate.