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In this activity, learners make a barometer, an instrument to measure change in air pressure.

In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.

Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

This activity (on page 2 of the PDF under SciGirls Activity: Lift Off) is a full inquiry investigation into the engineering challenges of sending scientific sensors into space.

In this activity, learners discuss the different salinities of oceans, rivers and estuaries.