The new Pacon Dual Ruled Composition Books feature two alternating ruling styles. The right-hand page offers a 3/8" wide ruling for traditional note taking and the left-hand page features a 1/4" grid ruling to draw coordinating graphs, illustrations and interpretations. Note taking in this manner engages both hemispheres of the brain. These durable, hard cover, one-subject books are available in four different colored covers with a coordinating colored paper on the inside. Item #MMK37160 features a Blue cover with Light Blue paper. Item #MMK37162 features a Green cover with Light Green paper. Item #MMK37163 features a Yellow cover with Light Yellow paper. Item #MMK37164 features a Dark Gray cover with White paper. Using colored paper has been shown to help students with dyslexia work through the impacts of this learning disability. The colors also allow students to organize by class, theme or semester. Recyclable.