Question

4. How many toothpicks would you need to make any sized square? Is there a pattern or rule? Explain.​

Answer 1

4 toothpicks, for the pattern part, you always need 3 more toothpicks to make another square

Explanation:

To make 1 square use 4 toothpicks; to make 2 squares use 7 toothpicks; to make 3 squares use 10 toothpicks. For each new square you needs a further 3 toothpicks.