A radio receives radio signals, converts them to an electrical signal, then converts this signal to a sound signal, and amplifies the sound so people can hear it. Class members use this information to create a short-wave radio antenna...

How large can a population become? The fifth installment of a nine-part unit teaches young ecologists about limiting factors that determine the carrying capacity of species in the Sonoran Desert. Here is a PowerPoint to help present this...

Young water cycle enthusiasts discover the water they have been using has been cycling around the earth for billions of years. Through presentations, learners will understand that water has three states and how these forms...

Fourth graders engage in a study of sound pollution at their school. After a class discussion on what noise pollution is, learners are asked if they think there are areas of their school or community where noise pollution is a problem....

If 71% of our planet is covered with water, why do we need to bother conserving water? Find out with these activities designed for middle and high school environmental scientists. From reading articles to solving crossword puzzles, to...

Students explain why a transiting planet causes a periodic dimming in the light from its parent star. They determine the radius of a planet, and its orbital distance, by analyzing data and manipulating equations. Students compare the...

Students apply estimation strategies and proportional reasoning to determine a scale comparing the planetary bodies to Earth. They convert measurements of time and distance using scientific notation. Both the metric and customary units...

Students will examine the layers of the Earth. In this geology lesson, students create a scale model of the Earth's interior using cash register tape. They will determine the percentage of error in the scale compared to the actual size...

Students compare the unique characteristics of Earth to other planets and then write descriptions of Earth that might attract fictional extraterrestrials to visit the planet. They design an appealing travel brochure that incorporates the...

How does San Francisco supply its citizens with enough water, even during a drought? Learn about reservoirs and why desalination could be a good solution with a reading passage about water conservation. After kids finish the...

Learn about George Washington Carver's important contributions to agriculture by studying the sweet potato. First graders read about the inventor's observations and prepare sweet potato slips for the class garden. Additionally, they...

How are vegetables beneficial to a healthy diet? Have kids examine different types of vegetables, such as zucchini, broccoli, and carrots, and determine which parts of the plant they represent. Then, they taste the vegetables as a...

Meteorologists view an animated video by the Environmental Protection Agency to learn how the carbon cycle works, and then move into groups to analyze and graph actual data of the atmospheric carbon dioxide concentration from Hawaii's...

The Galle crater on Mars is also known as the Happy Face crater because of its appearance. First, scholars use pebbles and flour to simulate craters and study their properties. They then apply this knowledge to help decipher the history...

Combines mathematical measurement with gardening skills. Third graders hunt for worms in the garden and try to find the longest one. They also measure and weigh vegetables that they harvest from the garden, measure rainfall amounts,...

Two individuals share 99.9 percent of their genetic codes, yet diversity is observed everywhere. Young scientists learn about diversity through hands-on activities and an experiment. They apply the concepts of independent assortment and...

Students work with a partner using the Internet to find the answers to a web quest about space exploration. They work in cooperative groups to discuss information and evaluate its importance to space exploration.

Students learn the order and key characteristics of each planet in our solar system. In this solar system lesson, students work in groups to characterize each planet on an index card. They use their index cards to put the planets in...

Students arrange the planets according to their distances from the sun. In this astronomy activity, students list interesting properties about each planet. They identify an unknown planet photo.

Students randomly select a planet, including Earth. They research key features of the planet including mass, volume, density, gravity, temperature, weather, geology, atmosphere, surface features, location from sun, Earth and other...

Students participate in an online whale watching game. They identify the reasons for migration and describe the route. They make predictions on what would happen if the ways did not migrate.

Students examine the topic of the Earth's rotation, revolution, and orbit. They observe teacher-led demonstrations, explore various websites, write journal entries, conduct a demonstration of why Earth experiences day and night, and...

Students investigate the world of bees and describe their characteristics. by identifying the bees' parts, they demonstrate how these parts function. In the lab, students dissect bees and view the various parts under microscopes. ...