Unit 3, Day 13

Agenda

1. Number talk: Graph Talks — one wave, four disguises
2. Random groups — stretch and slide $\sin x$: the recipe’s final examination
3. Consolidate: $y=a\sin (k(x-d))+c$ — amplitude, period, phase shift, and axis, each by name
4. Launch: The Tide Problem — real water, real clock

Things to do before our next class

• Read The Tide Problem and bring one question about the data.
• Journal: which of the four letters your group trusts least, and why.