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In this fun math activity (page 5 of the pdf), learners will help a secret agent crack a case by solving math problems.

In this online Flash game, learners will explore a coral reef using an underwater remotely operated vehicle (ROV).

In this sorting activity, learners play a game in which they try to identify the largest number of differences between two objects.

In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu

This activity (page 1 of the PDF under SciGirls Activity: Exercise and Memory) is a full inquiry investigation into the effects of exercise on short term memory.

In this activity, learners use their imaginations and picture a scene in their heads.

In this outdoor activity (on page 2 of the PDF under GPS: Baseball Activity), learners will investigate the transfer of energy using sports equipment.

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.

In this activity, learners will build the highest tower they can out of recycled materials.

As learners play this game, they build skills in area, perimeter, multiples and factors. They take turns making rectangles with 12 squares on the grid.

In this activity, learners make their own "tornado" using two soda bottles and water.

In this activity (p.6-10 of PDF), learners use different methods for hunting minibeasts (bugs). Learners can either make traps or simply look for minibeasts under stones and logs.

In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

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 astronomy activity (page 6 of the PDF), learners will compare and contrast two planets in the solar system using data obtained from the internet.

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

In this quick activity about size and scale (on page 2 of the PDF under What's Nano?

In this activity, learners create a CloudSpotter wheel and record the different types of clouds they observe twice daily over several days.

In this online activity, learners will brush up on their multiplication, division, and factoring skills with this exciting game.

Put math of measurement into lining up — and make waiting in line fun. Choose a size characteristic that learners can physically compare, such as foot length or hair length.