What is Work?
For this science worksheet, learners describe the work in 3 situations as positive, negative, or no work. Students also answer questions about power.
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New Review What Is the "Greenhouse Effect"?
Enough talk about the Greenhouse Effect—let's actually look at it! Junior climatologists engage in a simple thermodynamics experiment on a cold winter's day to examine global warming. The activity simulates rising carbon dioxide levels...
6th - 12th Science CCSS: Adaptable
What is Dark Matter and Dark Energy?
All matter in the universe only adds up to five percent of the universe — the video explains the other 95 percent. It describes what we know about dark matter and dark energy. With more to learn, scientists share the excitement of their...
6 mins 9th - Higher Ed Science CCSS: Adaptable
New Review How Does the Immune System Work?
The human immune system doesn't always prevent us from getting sick, so what is it doing? Young scientists watch a short video explaining what the immune system is and how it works. Then, they answer eight questions to prepare for an...
5 mins 9th - Higher Ed Science CCSS: Adaptable