Drop object names and teach children to mentally add and subtract numbers up to 10 directly.


In this phase, do not mention objects. Lessons must be entirely oral.

Follow the step-by-step instructions below to teach the lesson.

Progress to the next lesson when children master the current lesson.

Value mastery over speed of progression.


Teach children to mentally combine and separate numbers up to 10.

  • Ask children to call out the answer to questions such as, 'How many are 9 and 1? How many are 10 less 1?'
  • Master the operations in the table below (vary the order of questions):