In this video, the teacher explains how to interpret and solve word problems involving division of fractions. They use examples and visuals, such as a number line, to help students understand the concepts. By breaking down the problems...

How to calculate and apply the Sign Test to a contemporary psychological problem - the shaping of attitudes towards the death penalty.

This video explains how to identify and describe patterns using charts. It shows examples of numerical patterns and how to determine the relationship between them. The video also demonstrates how to make predictions based on the patterns...

In this video, the teacher explains how to solve word problems involving addition of fractions with unlike denominators by using a number line. The teacher emphasizes the common mistake of simply adding the numerators and denominators...

If you look at a map of America youÕll see a couple of states that are rectangles. But if we take a closer look these states are not rectangles at all. The curvature of the Earth and errors present in surveys of the states have led to...

In this video, the teacher explains how to graph a line using a point and the slope. They use the example of Jack trying to find his boat on a map, demonstrating step by step how to determine the slope and plot the line on a coordinate...

This video explains how to interpret the quotient in a division problem with fractions by considering the context of the problem. It provides examples and stories to help students understand the meaning of the dividend, divisor, and...

Optimizing Wi-Fi communication means ensuring there is proper coverage over a given area and that there are no wireless interference issues from other transmitting devices. A wireless site survey with a heat map can identify overlapping...

NASA's Voyager 1 spacecraft officially is the first human-made object to venture into interstellar space. This animation details its journey from earth to the outer limits of the solar system.

General Electric has been named as the turbine supplier for the first “commercial scale” offshore wind farm to be built in the U.S.

The largest red tide Florida has seen in a decade is moving towards the western coast and could impact marine life and tourism, officials say.

In this video, students learn how to divide decimals using a number line. The teacher emphasizes the importance of considering the decimal point when dividing and demonstrates how to use a number line to visualize the division process....

Understanding what happens at the epicenter of an earthquake, as the tectonic plates beneath the earth shift and the earth shakes, could help us better predict when and where the next big one will hit. For the past six years scientists...

Jerry Blumengarten taught for 32 years in the New York City school system.  Even though he was a licensed Social Studies teacher, he taught most subjects (Language Arts, Science, Math, Computers…) for grades 6-9. He wrote curriculum for...

Sight, hearing, smell, taste and touch are the five basic senses that humans pocess. But surely we can do better, right? As scientists unravel the mysteries of the brain, the true level of its neuroplasticity is being revealed. In this...

In this video, students learn how to identify improper fractions on a number line by dividing it into equal parts. The teacher uses the analogy of dividing a candy bar into thirds to explain the concept. Students also learn that the...

On Monday, we talked about how EpiPens are a perfect example of the dysfunction of the American Health care system. Evidently, America agreed. Days after the NYT published my and other pieces, a whole bunch of stuff happened. Let's...

This video is an introduction to formula and how to use it in mathematical operations to calculate variable values. Using the example of calculating the cost of a taxi ride based on distance, the video explains how to convert information...

Dark matter is a scientific mystery. We can't see or touch it. But physicists like Dan McKinsey theorize it must exist because without it, the universe would look quite different. With support from the National Science Foundation,...

Dark matter is a scientific mystery. We can't see or touch it. But physicists like Dan McKinsey theorize it must exist because, without it, the universe would look quite different.



With support from the National...

In this video, a ranger describes easy hikes in Yosemite Valley to Bridalveil Fall, Mirror Lake, and Lower Yosemite Fall.

In this video, a ranger describes moderate hikes in Yosemite Valley, including, the Valley Loop Trail, the trail to the Vernal Fall Footbridge, and Columbia Rock.

In this video, the teacher explains how to use a scale factor to find the area of a scale drawing. They demonstrate how multiplying the length and width of a figure by a scale factor does not generate the scaled area. Instead, they...

Willamette Valley's specialty seed crops face threats from cross-pollination due to its unique geological and weather conditions that are ideal for seed production. A detailed mapping system and distance standards for crop isolation are...