K12 Reader
Water Cycle
solid, liquid, and gas. The three different forms of water are the subject of the article used to assess reading comprehension. After reading the article, kids respond to a series of comprehension questions based on the text.
University of California
Plankton
Plankton: so much more than just a SpongeBob character. Three different activities have kids looking at both phytoplankton and zooplankton in pictures, as well as collecting their own samples (depending on your access to a saltwater...
Curated OER
Changing Planet: Withering Plants - Stressing Over Lost Water
Expectant earth scientists examine the bottom side of a leaf and learn the role of the stomata. They consider the gas exchange that occurs through these structures and relate how the climate is changing to its impact on food crops. This...
Howard Hughes Medical Institute
What van Leeuwenhoek Saw
When van Leeuwenhoek saw cells and single-celled organisms for the first time, he knew these small things were a big deal! Share his discoveries with young learners through a narrated video, model-building activity, and scale study....
Carolina Biological Supply
Aquarium Equilibrium Demonstration
Sometimes equilibrium is a difficult concept for a beginning chemist to grasp. Here is a demonstration that helps them to visualize what is happening at a molecular level. Using two aquariums and different sizes of beakers to transfer...
Green Learning
Build Your Own Biogas Generator
Where this is not exactly a lesson plan, it is a terrific outline of how to generate biogas from an animal manure sample. If you are up for the challenge, the generator can be built by your class as a concluding project at the end of an...