Introduce learners to The Silk Road, the first world-wide web. The narrator of this short, animated video traces the pioneers of globalization and the impact they had on culture and economy. The Scythians, Darius the First, and Alexander...

Sickle cell disease only occurs when both parents contribute the trait, and mostly in those of African descent. Where did it come from? How did it evolve? Tony Allison, a molecular biologist, noticed a connection between sickle cell and...

Two sides and an angle ... a triangle it makes. Given the measure to two sides and the angle between them, the narrator of a short video shows how to draw a triangle with a ruler and protractor. Pupils use handouts to practice the newly...

Got milk? Only two cultures have had it long enough to develop the tolerance of lactose as an adult. Learn how the responsible genes evolved along with the cultures that have been consuming milk. This rich film is supplied with a few...

Curious scholars make like Curious George and use their five senses to identify mystery objects. After a brief discussion, learners watch an engaging Curious George video in preparation for an activity. Scholars visit three tables that...

Capture the hearts of your young statisticians with this real-life example of using statistics in online dating. The use of average and geometric mean are discussed in the context of creating the algorithm used to connect people.

Some words are best left unspoken.  Words matter, according to Benjamin Zander, conductor, teacher, and lecturer. To illustrate his point, Zander recounts a story told to him by a survivor of Auschwitz. As a result of her experience...

Break it down to solve it. Learners watch a video on how to factor out the greatest common factor for algebraic expressions. They see how to use factoring and the zero product property to solve polynomial equation and practice their...

Entertain and grab your learners' attention with a short video clip that engagingly teaches the concept of a permutation and how a factorial is a wonderful shortcut for theoretical probability calculations.

The United States Civil War forced Northern and Southern societies, as well as the people who made up those societies, to reconstruct their vision of themselves and their identities. A series of video-based web lessons look at the great...

How will a scale factor affect a figure—negatively? Using a grid, the narrator of an engaging video performs a dilation with a negative scale factor. The presenter compares a positive scale factor with a negative scale factor to explain...

Closer to this point and farther from that one. Continuing with loci problems, a short video shows how to work problems that are not straightforward. The presenter works loci problems that result in a region that meets several criteria.

The Emancipation Proclamation freed slaves in the Confederate states. The Thirteenth Amendment banned slavery in the United States. However, neither document defined freedom. The second lesson in the Reconstruction Era series examines...

Divide and conquer factoring. Learners see how dividing polynomials is similar to long division of numbers. Pupils learn how to use long division of polynomials to help find factors of higher degree polynomials. They then use their...

To say it explicitly—put the terms in order. Pupils learn about the two main sequences, arithmetic and geometric and discover the general explicit formulas for both types. Using the formulas, learners then calculate specific terms of the...