Teaching this skill
Use the page after the idea is visible.
Build threes from a known double plus one more group. For example, 3 × 7 is 2 × 7 plus another seven.
Before independent work, solve one example together and ask the learner to name what each number represents. During practice, prioritize accurate reasoning over speed. A short set completed with an explainable strategy gives better information than a rushed full page.
A likely misconception
Respond to the pattern, not just the wrong answer.
A correct product reached by skip-counting is useful evidence, not a failure. Build accurate pattern knowledge first, then reduce the time and support gradually.
Mark a small sample first. If errors share a pattern, pause the sheet and reteach with a model, number line, array or known fact. If errors are isolated, ask the learner to check those items using the inverse operation.