Learn how to calculate sale price when combining two "percent-off" discounts in this video from KQED. In the accompanying classroom activity, students develop and share a variety of strategies, including modeling with a 10 x 10 grid to...

Students show comprehension of basic arithmetic skills. The online test assesses scholars on ratios, proportions, and percents.

An open-ended assessment using ratios and rates.

Discover how to solve problems with percent by taking a look at examples and a video lesson.

Provides examples and a video lesson that illustrates how to solve percent problems.

Statistical data on the population and demographics of 228 countries, including change, sex ratios, life expectancy, and percent with HIV/AIDS. There are also detailed explanations of the means of producing these statistics. It is...

Use math to learn about changes in US wealth distribution and poverty rate over time in this interactive from KQED. In the accompanying classroom activity, students interpret the graphs and consider how the poverty rate spike following...