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In this activity, learners will design a seed and test how it travels. Learners will use the Engineering Design Process to create a seed which can move from place to place.

Learners explore the variables that affect the properties of ice and the places where different types of ice are found.

In this activity (page 13 of the PDF), learners discover how weathering and erosion change the Earth’s surface.

In this math lesson, learners apply the concepts of ratio and proportion to the capture-recapture statistical procedure.

In this food science activity, learners observe different plant-originated foods.

In this experiment, learners use a blow dryer and water bottle to observe and record changes in air pressure caused by changes in temperature.

Learners explore capillary action in plants (such as plants ability to move water from roots to leaves) in an investigation called Paper Blooms.

Why is ocean water sometimes the warmest when the average daily air temperature starts to drop? In this activity, learners explore the differing heat capacities of water and air using real data.

In this activity, learners design and build a simple wind vane —one of the oldest kinds of weather tools— and use it to show wind direction.

In this activity, learners will discover how fossils are dug out of the earth by carefully exposing treasures hidden in an artificial rock that is easily made at home.

In this ecology activity (page 8 of the PDF), learners explore how to filter contaminated water using a variety of materials.

In this plant science activity, learners role play as vegetables and weeds competing for nutrients.

Learners follow directions to construct a water-powered electrical generator using a turbine made from plastic spoons.

This display shows the dangers of acid rain on buildings and other structures as two concrete bunny rabbits are disintegrated by sulfuric acid. Learners scrape chalk onto the concrete bunnies.

In this meteorology activity, learners construct simple devices to measure the direction and speed of wind.

In this activity and/or field trip, learners investigate the water currents that aquatic animals create when they breathe, feed, and propel themselves through water.

In this activity, learners simulate the behavior of the atmosphere.

In this activity, learners explore how engineers work to solve the challenges of a society, such as delivering safe drinking water.

In this outdoor science/art activity, learners investigate spider webs by using string to create their own spider webs.

In this geography investigation, learners use a nighttime satellite image to observe areas of light across the United States and to identify patterns and spatial distributions of human settlements.