Package Included: this set includes 31 sections of laminated number lines covering -20 to +120, with 200 glue points included; They serve as suitable tools to meet varied math educational needs; Foster engagement with this versatile learning aid -20-120 Large Number Line: each number line section measures approximately 14.5 x 5 inches, ensuring large, easily visible numbers suitable for any classroom setting; The big, bright colors help children visually distinguish between positive and negative numbers, enhancing math concept grasping Durable and Sturdy: crafted from card stock paper with a laminated surface, the number lines are durable and waterproof; Writable with dry erase markers and easily cleaned, these reusable numbers come with glue points for effortless display on various surfaces