Remembering your groups of 9 maths facts is not an easy task. Ideally by the end of Grade 4 students should have quick recall for all their multiplication and division facts to 10 x 10. This group of 9 happy children is one way to help them focus on adding groups of 9, looking for a pattern and locking them into their memory bank. There is also a Groups of 9 Happy Children Poster Stage 2 to help you with your Mental Warm-ups.