Using a household fan, cardboard box and paper towels, student teams design and build their own evaporative cooler prototype devices. They learn about the process that cools water during the evaporation of water. They make calculations to determine a room's cooling load, and thus determine the swamp cooler size. This activity adds to students' understanding of the behind-the-scenes mechanical devices that condition and move air within homes and buildings for human health and comfort.

Students are introduced to the basic biology behind Pacific salmon migration and the many engineered Columbia River dam structures that aid in their passage through the river's hydroelectric dams. Students apply what they learn about the salmon life cycle as they think of devices and modifications that might be implemented at dams to aid in the natural cycle of fish migration, and as they make (hypothetical) Splash Engineering presentations about their proposed fish mitigation solutions for Birdseye River's dam in Thirsty County.

In this regular column of the free, online magazine Beyond Weather and the Water Cycle, the author looks at the importance of conserving water and practicing good conservation habits daily. The column is designed for teachers in K-Grade 5 classrooms and presents concepts of climate literacy that are appropriate for young children. Identified online resources provide data collection activities, lessons, and games.

This article provides lesson plans about natural resources and energy sources for elementary teachers.

Students see how different levels of surface tension affect water's ability to move. Teams "race" water droplets down tracks made of different materials, making measurements, collecting data, making calculations, graphing results and comparing to their predictions and the properties of each surface, determining which surface exhibits the highest (or lowest) level of surface tension with water. They apply their results to make engineering recommendations for real-world applications.

The quality of the food we eat and the water we drink depends upon the quality of our topsoil. By putting a mulch cover on our topsoil, we help to protect this quality. Find out exactly what mulch is, what it can do, and how to properly use mulch.

Prior to reaching households, water is exposed to a variety of treatments designed to render it fit for human consumption and use. One of the first treatment steps is the removal of suspended solids using chemical additives called flocculants. In this activity, students learn about two commonly used flocculants and clean water collected from a local pond or river. They experiment with flocculant, stirring and pH variables.

In this activity, students learn how engineers design faucets. Students will learn about water pressure by building a simple system to model faucets and test the relationship between pressure, area and force. This is a great outdoor activity on a warm day.

Student teams investigate the migration of small-particle plastic pollution by exposing invertebrates found in water samples from a local lake or river to fluorescent bead fragments in a controlled environment of their own designs. Students begin by reviewing the composition of food webs and considering the ethics of studies on live organisms. In their model microcosms, they set up a food web so as to trace the microbead migration from one invertebrate species to another. Students use blacklights and microscopes to observe and quantify their experimental results. They develop diagrams that explain their investigations—modeling the ecological impacts of microplastics.

In this comprehensive website, students will learn about different forms of pollution, environmental impact of pollution, global warming, and things they can do to make a difference.

Looking at transportation and the environment, students learn that some human-made creations, such as vehicles, can harm the environment. They also learn about alternative fuels and vehicles designed by engineers to minimize pollution. The associated hands-on activity gives students a chance to design their own eco-friendly vehicle.

Students learn about tsunamis, discovering what causes them and what makes them so dangerous. They learn that engineers design detection and warning equipment, as well as structures that that can survive the strong wave forces. In a hands-on activity, students use a table-top-sized tsunami generator to observe the formation and devastation of a tsunami. They see how a tsunami moves across the ocean and what happens when it reaches a coastline. They make villages of model houses to test how different material types are impacted by the huge waves.

UNICEF's youth section provides information on how to help this famous non-profit with its mission, a forum, real-life stories from people in less-developed countries, educational games and "what do you think" questions, and materials to help young people raise awareness about issues affecting youth around the world. The site is available in English, French and Spanish.

Of the renewable energy sources that generate electricity, hydropower is the most often used. Learn other interesting facts about hydropower as the pictorial illustrations bring the information to life.

An in-depth explanation of the Earth's water cycle, including a hyperlinked diagram that provides direct access to information about each phase in the cycle.

You will find this list of questions interesting and amusing. "Things like, "Is salt water used for anything in the U.S.?," and How can we have a 100-year flood two years in a row?", are found on this this. Click Home to access the site in Spanish.

An introduction, aimed at upper elementary- and middle-school learners, to acid rain. [Click back to home to access the site in Spanish.]

"Explore things on, in, around and about the earth," with this web site dedicated to K-12 education from the United States Geological Survey. Homework help, science topics and fun learning games for students in Kindergarten through High School.

Students learn about Pascal's law, an important concept behind the engineering of dam and lock systems, such as the one that Thirsty County wants Splash Engineering to design for the Birdseye River (an ongoing hypothetical engineering scenario). Students observe the behavior of water in plastic water bottles spilling through holes punctured at different heights, seeing the distance water spurts from the holes, learning how water at a given depth exerts equal pressure in all directions, and how water at increasing depths is under increasing pressure.

Groundwater is one of the largest sources of drinking water, so environmental engineers need to understand groundwater flow in order to tap into this important resource. Environmental engineers also study groundwater to predict where pollution from the surface may end up. In this lesson, students will learn how water flows through the ground, what an aquifer is and what soil properties are used to predict groundwater flow.