“We’ve been looking at the relationship between groupings within five and the power of that ........”
By seeing and knowing groupings within 5, students can more readily and efficiently partition numbers. As concluded in this clip, this knowledge supports well the transition to early additive strategies.
Domain: Addition and subtraction
Transition: 4 → 5
Barrier: Sound knowledge of groupings within 5.
Other resources:
Numeracy activities: