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In this activity, learners build a bird feeder or feeders to attract birds for observation.

In this activity, learners of all ages can become food scientists by experimenting with flour and water to make basic pasta.

In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered.

This activity offers learners and their families several ways to raise their awareness together about home water.

In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill.

In this activity, learners track their movements with jumping and leaping graphs.

In this activity, learners surprise their eyes with an optical illusion involving arrows made out of pipe cleaners.

In this activity, challenge learners to predict and investigate how many water drops they can fit on one penny.

In this activity (11th activity on the page), learners use pennies to test their hearing acuity.

This fun hands-on astronomy activity uses a variety of simple props to help learners understand why they see what they see in a telescope.

Make a quick and easy filter from household materials. A filter will catch any solids suspended in a liquid and filter them out. By using a filter, learners can discover amazing things.

In this activity (17th on the page), learners investigate why you cannot see colors in dim light.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this quick activity/demonstration (5th on the page), learners explore depth perception.

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 activity (last activity on the page), learners make a model of the eardrum (also called the "tympanic membrane") and see how sound travels through the air.

In this activity, learners make an optical illusion toy from the 1800s to explore persistence of vision.

In this activity, learners use various dress-up or costume pieces to play a game of change.

In this activity, learners investigate static electricity using everyday objects at four different stations.

In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.