In this composition of soil instructional activity, students study the make-up of soil by identifying the amount of air in the soil, the amount of water in the soil, the size of the mineral grains in the soil and the proportion of humus...

Young scholars perform soil tests for pH, nitrogen, phosphorus, potassium, composition and water percolation rate and assess the conditions in the schoolyard.

Students study soil and its composition. In this soil composition lesson, students study examples of soil during several days of aeration. Students summarize their data, organize it, and must be able to explain their findings.

Students determine the soil composition of soil layers in their area. They collect soil samples, calculate the percentage soil water content, analyze data, and evaluate each site for future tree growth.