Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
A student sends a text to three friends. Then those three people each forward the text to three of their friends.
(We'll call that "round 2.") Then the "round 2" recipients also each forward it to three friends. (That's "round 3.")
1. How many students receive the message in each "round" of texts?
Round 1: 3 people
Round 2:
Round 3:
2. Explain your reasoning.