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Blood types and transfusions are explained in reading passages at the top of the learning exercise. A chart of blood type compatibility is also provided. Biology students answer comprehension questions and then exercise critical-thinking...

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...

Did you know some birds paint their nests with the juice from berries? Video describes three unique and awesome nests built by birds, how they are made, and the many functions each serve. 

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...

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

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...

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...

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...

A flipped classroom lesson introduces astrophysics fanatics to Kepler's three laws of planetary motion. After reading about the laws of ellipses, equal areas, and harmonies, and also learning how Newton's gravitation concepts come into...

Isn't a domain already a set of values, a territory, part of a web address, and an area of magnetism? In the last video, the instructor walks learners through a history of life on Earth. Scholars then see the seven characteristics of all...