Math The Key to Success in Math Essentials materials teach students the math that they NEED to know. Every lesson is designed in a manner to make math fun and exciting. Each lesson is short, concise, and self-contained. Students don’t have time to get bored or discouraged. The consistent review is built into lessons so students are able to master and reinforce their math skills. Students can see their progress and this helps increase their confidence and build self-esteem.