Final answer:
Grouping letters with similar overall shapes and/or first strokes is a strategy that can be used when teaching letter formation.
Step-by-step explanation:
When teaching letter formation, a strategy that can be used to group letters together for instruction is to group letters with similar overall shapes and/or first strokes. This allows students to identify common patterns and movements when forming different letters. For example, letters like b, d, p, and q all have a similar overall shape and first stroke, so they can be taught together.