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Learners use shop tools and various materials to construct a magnetic spinner and a compass.

In this activity, learners discover that some things only stand up while they are spinning.

In this design challenge, learners will engineer a structure and see if it can survive an earthquake they create.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

This marine biology activity (on pages 11-17) introduces learners to kelp (seaweed) forests that grow in the ocean and are home to many species of sea animals.

In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.

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 family or group inquiry activity, learners use their senses to explore a local forest or woodland.

In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

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 math lesson, learners use the setting of a flower-making fundraiser to explore a variety of patterns. Learners examine the patterns in a flower design made of triangles surrounding a square.

This activity (on page 2 of the PDF under SciGirls Activity: Kites) is a full inquiry investigation into how a kite’s shape affects its performance.

In this activity (posted on March 27, 2011), learners follow the steps to construct a mini zoetrope, a device that produces an illusion of action from a rapid succession of static pictures.

Learners create their own piece of history by decorating, shattering, and piecing together a flowerpot "artifact".

In this environmental health activity, learners investigate their breathing and pulse rates, and learn how these measurements are affected by physical activity.

In this activity, learners use a nail and magnet wire to build an electromagnet, which controls the movements of a paper dancer.

This activity is about the mural making process done about 9,000 years ago in Catalhoyuk, Turkey.

Use geometry, a ruler, and a steady hand to create these amazing unfurling paper folds!

In this activity, learners make scale models of the Sun and Earth out of paper mache.

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