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In this activity, learners compare the ancient Egyptian system of measurement, which was based on body lengths, to the customary and metric systems used today.

In this Cyberchase activity, learners use math to explore how parts of the body are proportional.

In this activity, learners make three different "seed" types and determine which design flies the farthest.

In this activity on page 3 of the PDF, learners investigate how much sugar is in a soda. Learners use sugar cubes to measure and calculate the amount of sugar in a bottle of soda.

This activity is designed to let learners measure their reaction time or response time to something they see.

In this activity, learners use measurement concepts to make models of what their body parts might look like if they were a snake or a chameleon.

In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares.

In this activity, learners explore and experiment how we can use our bodies everyday to get from one place to another.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.

In this activity, learners take their own pulse and explore how heart rate is affected by various activities.

In this quick activity (page 1 of PDF under SciGirls Activity: Exercise and Memory), learners will investigate what happens to bubble gum when it is chewed for 5-10 minutes.

In this activity (9th activity on the page), learners work in pairs to see how their perception of touch differs from reality.

In this health activity, learners create a device so that they not only feel their heartbeat, but also see it, using a straw and some clay.

In this online activity, learners measure their pulse rates and investigate how their pulses change when they engage in different activities.

In this activity, learners test exhaled breath for carbon dioxide and learn how to use an indicator as a simple way to measure pH.