Adding doubles, such as 3 + 3 = 6 or 9 + 9 = 18, is a skill that teachers are required to teach in first grade, according to Common Core standards. Most states in the United States have adopted Common Core, which is an educational initiative that requires students to master specific skills in English language arts and mathematics. To teach this concept well, teachers can use innovative teaching methods, such as charts and songs, to motivate their students to learn doubles facts.

## Make a Doubles Chart

Visual charts can help students remember doubles facts more easily, especially if they tie abstract concepts with concrete objects. For example, you might write 1 + 1 next to a picture of two eyes; 2 + 2 next to a picture of an animal (two legs on each side) or a car (two wheels on each side); 3 + 3 next to a picture of an ant or ladybug (three legs on each side); 4 + 4 next to a picture of a spider, 5 + 5 next to a picture of two hands; 6 + 6 next to a picture of two half-cartons of eggs, each with six eggs; 7 + 7 next to a picture of two weeks from a calendar; 8 + 8 next to a picture of a box of sixteen crayons; 9 + 9 next to a picture of an 18-wheeler truck, and 10 + 10 next to a picture of two hands and two feet.