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Use of a "Centimeter Grid" is a wonderful, multi-sensory way to teach basic math facts: addition, subtraction, multiplication, division. Using the grid, students color-in squares to represent numbers, and then count the end result. For instance, to learn 2 + 6:  The student first colors two squares the same color, labeling them with a "2," and then six more in the same line using a different color, labeling these with a six, and finally, after counting up all the colored squares, labeling the entire set of colored squares with an "8." By this demonstration, it's clear that 2 + 6 = 8. [It's also clear that 6 + 2 = 8, 8 – 6 =2, and 8 – 2 = 6, thus completing a "fact family" cementing the  addition/subtraction relationship of the numbers 2, 6, and 8]. After discovery of each math fact, students "collect" the facts by writing each one on a flash card for later games of "flip the card" to help with memorization ( Triangle C...

Use of a "Centimeter Grid" is a wonderful, multi-sensory way to teach basic math facts: addition, subtraction, multiplication, division. Using the grid, students color-in squares to represent numbers, and then count the end result. For instance, to learn 2 + 6:  The student first colors two squares the same color, labeling them with a "2," and then six more in the same line using a different color, labeling these with a six, and finally, after counting up all the colored squares, labeling the entire set of colored squares with an "8." By this demonstration, it's clear that 2 + 6 = 8. [It's also clear that 6 + 2 = 8, 8 – 6 =2, and 8 – 2 = 6, thus completing a "fact family" cementing the  addition/subtraction relationship of the numbers 2, 6, and 8]. After discovery of each math fact, students "collect" the facts by writing each one on a flash card for later games of "flip the card" to help with memorization ( Triangle C...