Curated OER
What's in the Water? - Stream Side Science
Here is a complete activity in which young biologists or ecologists test the pH, dissolved oxygen, turbidity and temperature of stream water. The class visits an actual stream and makes observations of the site. They use scientific...
Biology Junction
World of Insects: Characteristics, Orders, and Collecting
Every bug is an insect, but not all insects are bugs. A presentation lists the characteristics of insects, describes their body parts, and explains metamorphosis. It also details every order and includes photographs and multiple facts...