These write-on, wipe-off cards are ideal to help students solve operations, ratio, and a variety of other problems. Features a single line on one side, and two number lines on reverse. Measures 4" x 20" each. Each pack includes 10 number lines. Sold as 3 packs for a total of 30 number lines.

• Ideal help students solve equations
• Single line on one side, and two number lines on reverse
• Durable blank write-on/wipe-off number lines
• 4" x 20" each
• 10 per pack, sold as 3 packs, 30 number lines total