- This REVISION of 44 colorful mats for use with a variety of activities and games described in the Grades 5-8 Teacher's Guide has 15 NEW 8-Bars mats. Mats include: Bingo/5-Bars Mats, 8-Bars Mats, Number Lines Mats, Tower of Bars Mats, Racing Mats, and Dots Mats for Ratios.