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.

Key Features :

i : Ideal help students solve equations
ii : Single line on one side, and two number lines on reverse
iii : Durable blank write-on/wipe-off number lines
iv : 4" x 20" each
v : Set of 10