1. Using a Classroom Simulation to Introduce the Exponential Function: Spread of a Rumor
You will receive a card; next to Round 0 it will read “No” (you don’t know the rumor) or “Yes” (you do know the rumor).
Instructions for each round:
Stand up and walk around. 
You MUST look at one other person’s card. If that card says “Yes” record “Yes” on your card for that round, if it says “No” then record “No” on your card for that round. WHEN RECORDING INFO DO NOT SHARE WHAT IS WRITTEN ON YOUR CARD!
NOTE: Once you have a “Yes,” you will always have “Yes” for each round thereafter, however you still must participate and show your card for each round!
Marianna

2. Number of people who know the rumor
Round
Number of people who know the rumor 1 2 4 3 8 16 5 32