CK-12 Foundation
Ck 12: Biology: Basics of Science Study Guide
This comprehensive study guide covers the key terms and basic concepts needed for an intro to science unit.
TeachEngineering
Teach Engineering: Composting Nature's Disappearing Act
In this activity, students explore the idea of biodegradability by building and observing a model landfill. This serves as an introduction to the idea of composting. Students learn about the role of engineering in solid waste management.
PBS
Pbs Nova Science Now: Sleep: Classroom Activity
Students practice a procedural skill -- knot tying -- to investigate if and in what way sleep affects learning and memory in relation to a learning a procedural skill. Sleeping is a behavior that is natural and essential for our health...