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This is a demonstration you can use to show learners how valves and pumps work in concert to move blood through the circulatory system.

Learners make bell bracelets, place them on their wrists or ankles, and then dance to the rhythms and sounds the bells make. Many cultures use ankle or wrist bells to make music during dancing.

This game is like regular bingo, except the clues are sounds.

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

How many colors make black? Gather as many water soluble black markers as you can find.

During this lesson, learners will determine their blood pressure and learn about systolic and diastolic pressures.

Use grape juice, baking soda, water and vinegar to make acid and base indicator paper! This activity contains a recipe and instructions for the indicator paper.

This activity is a fun way to show two stages in a Monarch butterfly's life cycle. Learners will create an optical illusion that can be flipped from caterpillar to butterfly.

This hands-on activity shows you how to make a shaker -- a small instrument with a big sound! Fill it with beads or even pennies for a cool sound.

In this activity, learners imitate the way vocal cords work by building a model from a plastic cup, rubber band, and a straw.

The Sacred Cenote at Chichén Itzá is a sink hole, or well, containing groundwater. In this activity, learners create their own cenote using chalk, limestone, acids, and rain water.

By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system.

This is a hands-on activity that uses bread and household materials to grow mold. Learners collect dust from a room, wipe it on food, and contain it. One to seven days later, mold has grown.

Learners will build a homemade pump using a balloon, a mason jar, and some straws.

In this activity, learners act out the flow of blood in the human body! A great way to get learners up and moving while learning about the circulatory system.

Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.

Create your own spinning top, and explore color, shapes and spinning. This activity contains instructions for making your spinning top, and tips on how to design and decorate it.

Create a painting by blowing air out of a straw. Push liquid acrylic paint around on some watercolor paper by aiming short bursts of air onto the paint puddle.

In this activity, learners investigate balance and symmetry by designing a symmetrical butterfly, using a paper cutout.

Experiment with liquids of different densities and create liquid layers. For example, oil and water have different densities: oil floats on water because it is less dense than water.