Fact Track Fact Series

In Corrective Mathematics, fact series exercises are another way to teach the relationship between various facts. The facts are presented in sequence to depict their relationship to counting.

For example, in the following exercise from Multiplication, Lesson 10, the series 9 x 1 = 9, 9 x 2 = 18, and 9 x 3 = 27, the second number is counted in times (1, 2, 3), and the number after the equals are counted in the multiple of nine (9, 18, 27).