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Squares

Use Duplex columns for digit patterns, then square larger numbers step by step.

Square with Duplex columns: D(a) | D(ab) | D(b), then carry by place value.

Level Guides

30 level-fit visual guides.

Level 1 visual plan for Easy squares (2-20)

Level 1 / foundation

Easy squares (2-20)

1 visual step

Level 2 visual plan for Duplex 1-2 digit

Level 2 / foundation

Duplex 1-2 digit

2 visual steps

Level 3 visual plan for Duplex 3-digit (1-5)

Level 3 / realistic untimed

Duplex 3-digit (1-5)

2 visual steps

Level 4 visual plan for Duplex 3-digit (1-9)

Level 4 / foundation

Duplex 3-digit (1-9)

2 visual steps

Level 5 visual plan for Duplex 3-digit (mastery, U >= 4)

Level 5 / foundation

Duplex 3-digit (mastery, U >= 4)

2 visual steps

Level 6 visual plan for 2d square (small digits)

Level 6 / foundation

2d square (small digits)

3 visual steps

Level 7 visual plan for 2d square (mid units)

Level 7 / foundation

2d square (mid units)

3 visual steps

Level 8 visual plan for 2d square (large units)

Level 8 / realistic untimed

2d square (large units)

3 visual steps

Level 9 visual plan for 2d square (any)

Level 9 / foundation

2d square (any)

3 visual steps

Level 10 visual plan for 2d square mastery (digits 4-9)

Level 10 / foundation

2d square mastery (digits 4-9)

3 visual steps

Level 11 visual plan for 3d square (easy mental)

Level 11 / build-up

3d square (easy mental)

3 visual steps

Level 12 visual plan for 3d square digits 1-3

Level 12 / build-up

3d square digits 1-3

3 visual steps

Level 13 visual plan for 3d square H:4-6 TU:1-3

Level 13 / realistic untimed

3d square H:4-6 TU:1-3

3 visual steps

Level 14 visual plan for 3d square H:4-6 U:1-6

Level 14 / build-up

3d square H:4-6 U:1-6

3 visual steps

Level 15 visual plan for 3d square mastery H:4-6

Level 15 / build-up

3d square mastery H:4-6

3 visual steps

Level 16 visual plan for 3d square H:4-6 TU:1-6

Level 16 / build-up

3d square H:4-6 TU:1-6

4 visual steps

Level 17 visual plan for 3d square H:7-9 TU:1-6

Level 17 / build-up

3d square H:7-9 TU:1-6

4 visual steps

Level 18 visual plan for 3d square H:7-9 U:7-9

Level 18 / realistic untimed

3d square H:7-9 U:7-9

4 visual steps

Level 19 visual plan for 3d square H:7-9 (any)

Level 19 / build-up

3d square H:7-9 (any)

4 visual steps

Level 20 visual plan for 3d square mastery H:7-9

Level 20 / build-up

3d square mastery H:7-9

4 visual steps

Level 21 visual plan for 4d square D1:1-2 (small)

Level 21 / mastery

4d square D1:1-2 (small)

4 visual steps

Level 22 visual plan for 4d square digits 1-3

Level 22 / mastery

4d square digits 1-3

4 visual steps

Level 23 visual plan for 4d square D1:4-6 (low)

Level 23 / realistic untimed

4d square D1:4-6 (low)

4 visual steps

Level 24 visual plan for 4d square D1:4-6 D4:4-6

Level 24 / mastery

4d square D1:4-6 D4:4-6

5 visual steps

Level 25 visual plan for 4d square mastery D1:4-6

Level 25 / mastery

4d square mastery D1:4-6

5 visual steps

Level 26 visual plan for 4d square D1:7-9 (low)

Level 26 / mastery

4d square D1:7-9 (low)

5 visual steps

Level 27 visual plan for 4d square D1:7-9 (mid)

Level 27 / mastery

4d square D1:7-9 (mid)

5 visual steps

Level 28 visual plan for 4d square D1:7-9 D4:7-9

Level 28 / realistic untimed

4d square D1:7-9 D4:7-9

5 visual steps

Level 29 visual plan for 4d square full range

Level 29 / mastery

4d square full range

5 visual steps

Level 30 visual plan for 4d square mastery (lead 5-9)

Level 30 / mastery

4d square mastery (lead 5-9)

5 visual steps

Practice this category

Use the method on live squares levels.

Open Squares Workouts