American Geosciences Institute
American Geosciences Institute: Soils
Seven hands-on lessons module allows students to learn about soils. These inquiry-based investigations explore the kinds and arrangements of materials in soils, the amount of water that flows through soil, and how soil is eroded.
BBC
Bbc Schools: Ks2 Bitesize: Science: Materials: Changes in Materials
Help solve the mystery and find the missing crystal. Following the activity, read more about chemical and physical changes, and then take a quick quiz to check for understanding.
Mocomi & Anibrain Digital Technologies
Mocomi: Separation of Substances
Learn about ten different methods of separation of substances.