Introduction to Soil Potassium and Demonstration of a Simple Test Procedure

Students list the three types of mineral particles that form soil. They explain the importance of an optimum soil texture. They form an hypothesis and make observations. They also draw a conclusion.

Students list sources of nitrogen in the soils. They explain why nitrogen is removed from the soil and how it is used by plants. They analyze the symptoms of insufficient or excess nitrogen in the soil.

Students list the sources of phosphorus in soils. They describe the processes in which plants remove phosphorus from the soil. They collect and analyze data and draw a conclusion.

As part of a study of soil and composting, fourth graders become worm farmers, build a vermiculture bin, observe, and care for their red worms.

Students explain the importance of dissolved oxygen in water ecosystems. They describe the aquatic oxygen cycle and the effect of water pollution on oxygen. They make observations, collect data and draw a conclusion.

Make your work as a teacher a little easier with a physical science project on simple machines. After introducing young scientists to these devices and identifying their different uses around the school, this project engages children in...

The choice is simple: create a PowerPoint presentation, write a book, or invent a compound machine. Whichever project your young scientists choose, they will be engaged in creatively demonstrating their knowledge of simple machines and...

Heat things up in your physical science class with this interactive lesson series on thermodynamics. Through a series of class demonstrations and experiments, young scientists learn how heat is transferred through conduction, convention,...

Seven superb slides sharpen science students' scoop on soil. In viewing them and reading the accompanying captions, your class will uncover the importance, different types, horizons, and protection of soil. They can then assess their new...

Begin a full lesson on climate change by demonstrating how carbon dioxide gas contributes to increased temperatures. Be aware that pressure inside the antacid-containing bottle in Activity 2 may cause the lid to fly off; keep viewers at...