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In this activity, learners use earthworms as "unknown creatures" from the South American jungle to find out how animals use senses.

In this simple exploratory activity (1st activity on the page), blindfolded learners try to identify mystery items by smell.

In this math activity, learners play a game using their number sense to make the highest or lowest number possible. Use this activity to explore place value and/or decimals.

These three short activities challenge groups to fit objects through paper and index cards: "Slots" presents the challenge for one learner to figure out which objects fit through a hole cut by another

In this technology activity, learners explore digital imaging and pixels. Learners "transmit" an image to a partner by creating an image on grid paper.

In this math activity, learners play a number game to explore the relationships between numbers, combinations, and the concept of equivalency.

In this online brain stumper, the bottom half of a series of letters is covered. You may think you know what it says, but remove the black bar to see if you're right.

In this activity, learners examine their tongue and taste buds.

In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.

Use this activity to build division and number sense into any snack time or whenever there is a limited set of things to share among a group: If we deal these out, could everyone get two pieces?

This fun hands-on astronomy activity lets learners explore models of the Milky Way and other galaxies to get a sense of relative distances to other galaxies.

In this family or group inquiry activity, learners use their senses to explore a local forest or woodland.

In this activity, learners will conduct an open-ended survey, and then organize and analyze results. What languages does everyone speak? What’s the most common? the least common?

In this activity, learners investigate visual perception as well as plan and conduct their own experiments.