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In this activity, learners can observe chaotic motion. A magnet tied to a piece of string makes a pendulum, which swings over three sets of fixed magnets.

In this activity, learners make their own solar oven to bake s'mores and learn about how solar energy is absorbed on Earth.

In this chemistry activity (page 6 of the PDF), learners observe a chemical change. Learners write and reveal a secret message using edible ink.

This is an activity (on page 2 of the PDF under Bone Regrowth Activity) about the two main components of bone - collagen and minerals (like calcium) - and how they each contribute to its flexibility a

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 weather activity (page 1 of the PDF), learners will construct their very own anemometer to measure wind speed.

Why should we wear masks? Do masks work? Do some masks work better than others? Learners find out in this activity.

In this physics activity, learners experiment with pulleys and find that they can decrease the effort needed when using a pulley to lift or move different loads.

In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells using simple materials.

This fun and simple hands-on astronomy activity lets learners make 3-dimensional models of the Earth and Moon.

Doctors often send a sample of blood to a lab, to make sure their patients are healthy.

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

In this chemistry activity, learners will test the pH of various foods and household substances using cabbage.

In this activity, learners will swirl paint into shaving cream to make an extravagant nebula print.

In this physical sciences activity, learners explore how forensic investigators collect prints from a crime scene. Learners make hand impressions in damp sand and analyze the patterns they observe.

In this activity related to Newton's Laws of Motion, learners build a boat powered by a propeller in the air.

In this water activity, learners explore how water drops behave on different surfaces.

In this simulation, learners become birds different beak types. Learners use various tools to represent beaks to pick up seeds and place them in a petri dish.

Learners measure irregularly shaped bones using a variety of measurement methods and tools. Then, they measure again using standard conventions and metric tape measures.