Fortalece tus destrezas numéricas y de cálculo (StrEnglishthen Your Number and Calculation Skills)Fortalece tus destrezas numéricas y de cálculo (StrEnglishthen Your Number and Calculation Skills)

Readers have fun with math as they work their way through this series of number puzzles and other activities that deal with calculation skills. Readers are able to select the appropriate activities for their comfort and skill levels using a unique color-coding system. They can also assess their progress independently using…