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In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system.

This is a classic exercise for visualizing the scale of the Solar System.

In this indoor and/or outdoor activity, learners make an anemometer (an instrument to measure wind speed) out of a protractor, a ping pong ball and a length of thread or fishing line.

Millions of organisms can live in and around a body of water.

In this activity, learners walk the sides and interior angles of various polygons drawn on the playground. As they do so, learners practice rotating clockwise 180° and 360°.

In this math activity, learners observe and sketch cracking patterns in pavement.

In this activity, learners use a hand-made protractor to measure angles they find in playground equipment.

In this activity, learners use their feet to estimate distances. Learners calculate the distance of one step in centimeters by measuring 10 steps at a time to reduce measurement error.

This lesson plan enables learners to explore the differences between weather and climate.

In this weather forecasting activity, learners use common materials to construct a rain gauge and measure daily, monthly, and yearly rainfall.

In this activity, learners investigate soil conditions by creating a soil map. Learners record soil characteristics and compare the conditions of soil in different grid sections.

Create airplanes from straws and geometric shapes. Test them out to see how far they can fly, or how accurately they can be aimed.

In this hands-on and feet-on excursion, learners take a science walk to visualize the planet's immense size and numerous structures, without the usual scale and ratio dimensions found in most textbook

In this activity, learners observe the moon each night for a month and draw their observations in a Moon Watch Log.

In this activity, learners work in teams to study the observation skills essential to scientific research.

In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.

In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away.

In this activity, learners use cooperation and logical thinking to find solutions to network problems on the playground.

This fun, nighttime hands-on astronomy activity lets learners explore how long it takes for light from different objects in the universe to reach Earth.

In this activity, learners simulate a wolf and its habitat and observe what happens when the limiting factors change over time.