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In this math lesson, learners are introduced to proportional reasoning through modeling, sharing, and questioning techniques.

In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.

In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.

In this drawing/mapping activity, learners design plots of land while incorporating positive strategies for improving water quality.

This activity (on page 2 of the PDF under SciGirls Activity: Music and Sound) is a full inquiry investigation into sound frequency.

In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.

In this activity, learners make critters out of recyclables and apply the rules of mathematics to solve genetics problems.

In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.

In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

In this math lesson, learners participate in several activities where they apply measurement skills.

In this activity, learners take measurements and create charts to learn about the size of dinosaurs and their relative scale to humans.

Build your own Mini Mini Golf Course and learn about hands-on building and design, basic circuitry, motion modules and more!