These short lessons are designed to fill in the gaps in understanding of * basic mathematical concepts that many very intelligent people missed*. The topics covered here were identified in a multi-year research study of students enrolled in college algebra and students being tutored for post-secondary high-stakes math tests. The study found that straightforward explanations of these concepts along with concrete examples resulted in a greater than 90% pass rate. Additionally, some students went on to be successful in majors that required several college-level math classes.

**These lessons are designed to be done in order.** Even if you think you understand a topic, watch the video anyway because it may show you a new way to look at a topic that makes other things easier. If you are studying for a high-stakes test, take practice tests as you watch these videos.

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Negative Numbers Made Easy | An easy way to add and subtract negative numbers, and get the right answer. You won't have to memorize anything. You'll just know how to do it. |