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In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.

In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.

In this activity, learners will create a magnifying glass called a waterscope, using water and household items, to examine various objects.

In this activity on page 7 of the PDF, learners explore how engineers characterize building materials.