Explore the differences between the United Kingdom, Great Britain, and England with a video that offers an in-depth look into each region and answers common questions about the surrounding countries. The video includes facts, engaging...

It's know as Swaziland no more—welcome, Estwatini! The African nation, while home to stunning geographical diversity, is one of the continent's smallest. It also has its challenges, with roughly a quarter of the adult population infected...

Tasmanian devils are scavengers who eat dead animals including the bones and fur. A video begins with cancer in Tasmanian devils to demonstrate the importance of genetic variation. Then examples such as the black-footed ferret and AIDS...

Explain how viruses use the lytic and lysogenic cycles with an explanatory video. The resource also describes retroviruses and the virulence of bacteria. 

Working with functions is transformational! An illustrative video explains the basics of the six algebraic transformations. The instructor uses function notation and provides an example of each. 

What is the biggest threat to a mass number of humans? Not natural disasters, but rather, pandemics! With a lecture and slide show, the speaker discusses how medical technology in the form of vaccines is bringing an end to suffering and...

Investigate the relationship between the gradient, or slope, of a line and its graph. Pupils learn to use a graph to calculate the slope of a line. The video lesson includes both positive and negative slopes and compares the steepness of...

Explore right triangle trigonometry with a thorough video lesson. The lesson instructor introduces the trigonometric ratios with an examination of right triangle sides and angles. She continues with practice writing the ratios using...

Learn about statistics from A to z-score. Young statisticians watch an informative video that explains how to compare different normally distributed quantities using z-scores and percentiles. An example using ACT and SAT scores...

The Industrial Revolution led to technological inventions we still use today. A video presentation explains the important inventions of the Industrial Revolution. Instruction includes a thorough discussion of the advancement of the...

It's time to put the angles in place. Using diagrams, the video presents the basic definitions of the four classifications of angles. The segment in an informative playlist on basic geometry also provides informal descriptions of the...

Ponder the problems of p-values. After reviewing p-values from the last video, the narrator explains some drawbacks of using p-values for hypothesis testing in the 22nd installment of the Crash Course Statistics series. The video...

Use math to help predict the future. Viewers of the 36th Crash Course video covering statistics hear about machine learning. They see how logistic regression, linear discriminant analysis, and K nearest neighbors are all models that help...