A video exploring life cycles of different species living in the same ecosystem and the influence of the ecosystem on the animal's life. Students will learn about comparisons in the animals' sexual maturity age, quantity of eggs laid,...

[Free Registration/Login may be required to access all resource tools.] Covers reproduction and development of fish.

In online and offline activities, students broaden their understanding of animals by learning to identify and classify animals into six categories: mammals, birds, fish, amphibians, reptiles, and invertebrates.

Through eight lessons, students are introduced to many facets of dams, including their basic components, the common types (all designed to resist strong forces), their primary benefits (electricity generation, water supply, flood...