Darcie makes a sequence of
patterns using matchsticks.
a) What number should go in the
box to complete the rule below?
b) Use the rule to find the number of
matchsticks in the 4th pattern.
Check your answer to part b) by
drawing the 4th pattern.
Rule:
Start with 5 matchsticks
Add ☐ matchsticks each time
Pattern number
1
2
Pattern
3
à do coo-