Students investigate how organic matter increases the amount of water soil will hold. In this water soil lesson plan, students use soil and measure water amounts using organic matter. Students measure the water holding capacities.

Use a container full of water as a prism and show that as light is bent, the individual colors from different wavelengths become visible. This explains why the sky appears to be blue midday, and why as the sun nears the horizon, it looks...

Students work together to create a watershed model. They discover the flow of surface water on different topography. They examine how materials originate from miles away and end up in a different wetland.

Students complete a chromatography experiment, In this chromatography lesson, students complete an experiment similar to one that was to be carried out on the Challenger that exploded. They examine ink spots as the wick on filter paper....

Students examine samples of water to determine its cleanliness. They visit a waste treatment plant and/or reservoir. Students explore what protects the water supply from contamination by chemical or organize pollution. They trace the...

Students investigate nutrient cycling in a simplified desktop ecosystem involving aquarium and hydro-ponically grown plants. They set up an aquarium with 10 gallons of water at least a week before the lab is planned and place...

Students investigate the transmission of light energy. In this light energy lesson, students observe bubbles using different colored filters and record their observations. They also look at a light source through various materials and...

In this groundwater pollution worksheet, students use a piece of bread to represent the earth, food coloring to represent contaminants in the ground and water to simulate the movement of pollutants with water through the ground. Students...

In this biology worksheet, students look at the function of filtering in the nephron of the kidneys and the biochemistry is emphasized.

Pupils observe the pH change of an acid mixture poured over soil in a filter. Since the buffering capability of soils differs, you may want to do this experiment with several different soil types.

In this marine life instructional activity, students fill in the boxes beside each ocean creature name with one of the following feeding methods: predator, scavenger, grazer, and filter feeder. Students then list or draw marine creatures...

Learners examine the three different types of soil and their physical properties.  In this soil lesson students design and implement a model of a water treatment plant. 

Students practice various sampling methods for retrieving data under water, ice, and soil. They use the sample material to make temperature measurements, chart contents, and draw their own conclusions as to what is happening in the...

Fourth graders construct their own aquifer. They discover how water travels underwater and identifies sources of underground pollution. They record their observations and discuss the results.

Students collect water samples from a local source, test it, filter it and identify the materials suspended in it. Students disucss the possible sources of sediment in their watershed.

Students create models of comets. They develop a comet model in a team and exchange samples with other teams. They use their senses to demonstrate the filters on a spectrometer and record their data. They discuss the contents of their...

Students explore the sources for recharge and discharge of groundwater. They research the connection between surface water and groundwater. Students construct a model of an aquifer and explore recharge and discharge of the aquifer.

Students make a model that will demonstrate the flow of surface water across the land in Texas and how materials that originate many miles away can end up in the wetland along the coast.

Students examine the roles of the immune system in keeping the body healthy. They see how engineers contribute to this process by creating antibiotics, and vaccinations. They discuss how an astronauts' immune system may be suppressed...

Conclude this chemical change unit by having your class combine two liquids that result in formation of a precipitate. The learners discover that chemical reactions result in new materials. Make sure to consider all of the preceding...

Chemistry explorers prepare a crystalline derivative and find its melting point. Once they discover the melting point, they are able to identify whether or not the substance is pure, and whether it is an aldehyde or ketone. This is an...

Youngsters develop an understanding of how smog is produced, and how exhaust from automobiles is one of the major sources of smog. They explore the roles that engineers play in developing technologies that reduce smog, then work in teams...

Explore the practice of oyster gardening. Because oysters play a vital role in marine ecosystems and their populations have declined, biologists are transplanting oyster seed to repopulate reefs. After learning about this practice,...

How do people determine if something is acidic or basic? Learners make their own acid-base indicators using red cabbage and then determine the acidity and alkalinity of different substances. First, they test substances of known pH and...