Introduction, Advance Organizer, and the Problem

Our five senses tell us a lot, but they don't tell us everything! Young biologists learn about three lesser-known senses in an enlightening video, the 147th in a science video series. The narrator explains the structures and chemical...

All mammals have warm blood, are vertebrates, breathe with their lungs, have hair or fur on their bodies, and produce milk for their young. But not all mammals give birth to their young in the same manner. Watch a video that explains how...

Sir Isaac Newton is the father of physics. Study his three laws of motion during this video. The video instructor explains the first law in terms of inertia, the second law that gives us the formula for force, and the third law of...

Learn about what happened at Three Mile Island Nuclear Power Facility in March of 1979 with this PBS site. A teacher's guide is available.

Tired of waiting for hot water? Groups of three determine the efficiency of an electric water-heating device. They calculate the amount of energy it takes to heat the water and the theoretical amount of energy required to heat the water....

Discover different dimensions with paper folding. Pupils first read about zero, one, two, and three dimensions, and then learn about the fourth dimension, time. They then use origami to create models of shapes in three dimensions and use...

The background behind the nuclear meltdown at Three Mile Island, and information about the lawsuit filed many years later by those affected by the nuclear accident.

Here you can learn general information about the nuclear accident that occurred at the Three Mile Island nuclear power plant in March of 1979 while also viewing an extensive collection of primary source documents, audio recordings,...

In this lesson, students learn about the different kinds of faults and plate boundaries and where they can be found. They research and report on the faults that are present in their state. They are also asked to develop models of three...

The following tutorial explains the three main types of elements, including metals, non-metals and metalloids.