Identifying the base is extremely important. Using five problems with negative exponents, the narrator demonstrates that knowing the base is important in simplifying algebraic expressions. The different problems use the same numbers but...

Adding two polynomials begins with simplifying when possible. Sal demonstrates the process he uses to combine like terms and explains why the process works. This video would be great for those who need a quick refresher.

This part 1 of a QuickTime movie extends the concept of doubling based on the book "The King's Chessboard". The doubled numbers are also shown using exponents. The data is organized in a table. As you watch and listen to the teacher and...