This versatile tool, designed to be used with standard 1-centimeter base ten blocks (units and rods of 10), helps students visualize and solve operations, ratio, and percent problems. The durable 1 cm foam number line is 4" High by 21" Long and has dual channels that can hold up to 50 base ten units each and a dry-erase writing surface. The dual channels provide students the ability to represent and 211589 equations and problems in a structured, meaningful way. Includes teaching notes with sample activities for ccss. Does not include base ten blocks or rods.