- Learning Numbers: Part 6
- Quick counting: Numbers under 20
- Quick Counting: Numbers Under 10: Part 2
- 3000 Examples and Problems: Mathematics + Mental Arithmetic (10+): Part 2: Quick Counting. Fractions and mixed numbers. Division. Equations. Word Problems.
- Quick Counting: Numbers Under 20: Part 3: Counting to 1000. Equations, inequalities. Word problems.










