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In this mathematics activity, learners use a map to determine the coordinates of and distance between two locations--both by road and "as the crow flies".

As learners play this challenging strategy game, they build understanding of area and perimeter. On each turn, a player draws a line between two dots next to each other on the grid.

In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

This PDF contains 12 calendars (12 months). Each month contains activities about math. Things to do on familiar holidays (like July 4), less common holidays (like Backward Day), and any day.

This strategy game has simple rules but can be a challenge. Players start with an empty hexagonal grid. On each turn, a player initials one empty hexagon on the grid.

As learners play this game, they develop logic, geometry, and spatial visualization skills. Players start out with an empty hexagonal grid.

This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.

In this card game, learners make two sets of three cards that are alike. Learners must justify to the rest of the players why the three cards belong in each set.

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

In this activity (4th on the page), learners conduct a series of tests to find out which of their ears is more dominant.

In this activity, learners play a guessing game to explore classification.

In this online activity, learners crack the special code imprinted on envelopes to help the U.S. Postal Service deliver the mail.

In this online puzzle game, learners need to choose a path from a starting number to a goal number. Along the path are simple operations (e.g.

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

In this activity (on page 2 of the PDF under GPS: Biodiversity Activity), learners will pair up and take a notebook outdoors to a selected location to observe and record a list of living things that t

This is an activity about music, movement, and math. Learners will start a rhythm pattern with 2, 3, or 4 beats. For instance, tap your foot, jump, clap, repeat.

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.

In this activity/demonstration, learners observe what happens when two ping pong balls are suspended in the air by a hair dryer. Use this activity to demonstrate how rain drops grow by coalescence.

In this activity (3rd on the page), learners investigate circadian rhythms by examining how well people do with estimating time.