Curated OER
What's in the Soil?
Fourth graders examine soil to find its contents, and how much water and air they can measure. In this soil composition lesson, 4th graders perform three experiments and record their results. In one experiment they examine the soil for...
K20 LEARN
How Does Your Garden Grow?
Seventy thousand different types of soil exist in the United States alone. Young scientists learn about the importance of soil to the food supply. They test soil for a variety of factors and determine the best place to set up a community...
Learning Games Lab
Fertilizing Chile
Fertilizer can mean the difference between a profit and a loss. Scholars use an online interactive to explore the effects of fertilizing in agriculture. Given information about the nitrogen levels in the soil, they decide the fertilizer...
Curated OER
What is the Composition of Soil?
Students examine the different components that make up soil. Using data, they identify the components of soil in their local area and discover how scientists use the soil to see how it was formed. They also describe the soil forming...