Awareness of Pre-algebra Concepts

Sal dissects basic algebraic equations of the form Ax=B. He encourages viewers to fully understand the equations before learning how to manipulate them. Furthermore, he teaches students how to solve the equations systematically. The...

Equipped with several examples from the attached module and from standardized tests, Sal takes viewers through the process of prime factorization and divisibility. He demonstrates each skill several times with many different numbers,...

Sal tackles pre-algebra in this series of videos, starting with the concept of negative numbers. Using a number line, he takes the viewer through different practical examples of negative numbers, such as temperature and bank accounts....

Occasionally, in mathematics, there are "shortcuts" one can take. Sal explains a quick way to divide decimal numbers. He demonstrates that in some instances, simply shifting the decimal point to the left will result in a correct answer.

If your class has watched the Khan Academy video on recognizing divisibility, they will have a good foundation for this video on finding factors. Sal demonstrates how to find factors of a number by using the divisibility rules and...

Explaining the concept of adding integers with different signs can become confusing. Use this video to provide students with a clear and explicit demonstration of how negative and positive numbers are added together. Sal uses a number...

Graphs are excellent tools for visualizing data. Use this video to demonstrate what inequalities look like on a number line. Sal draws a number line and shows the inequality. He effectively employs differentiated colors to express the...

Sal uses a TI-85 graphing calculator to demonstrate how to check his work while he solves a complex word problem where he must use scientific notation to express his answer. This would be a handy video for an SAT prep or cumulative review.

Cha-ching! You just hit the jackpot with this interactive consumer math unit. Supported by a series of online lessons and activities, these lessons engage students in applying their math skills to real-life personal...

Algebraic vocabulary and notation sometimes seem like a foreign language. A video tutorial breaks down the vocabulary and notation into easy-to-understand chunks. The narrator writes the notation with symbols, in words, and verbalizes...