For grades 1 through 6. Rectangle 150 Multiplication Mats is a study program you will complete over the course of a year to gain a deep understanding of multiplication and to memorize the multiplication facts. Many school systems throughout the world expect their students to memorize the multiplication facts by the end of grade 3 or grade 4. Most approaches aim to help students understand multiples and to memorize the multiplication facts. In the United States we often challenge students to master memorization of the facts; however, we do not necessarily achieve it. Unfortunately, too many of our students — nearly 50% — enter grades 5 and 6 without their multiplication facts memorized. This limits a student’s ability at a time when they should be learning higher and more complex math.The Rectangle 150 Multiplication Mats provides you with a tool for students to understand the big ideas of multiplication and to memorize the multiplication facts.