Agenda
- Number talk: Estimation Duels — how many seconds in a school year? Closest estimate, no calculator, wins
- Random groups: differentiate two ways — expand first, or take “derivative times derivative”; one of these lies
- Discuss: Mistakes Are Data — the wrong rule just taught us the shape of the right one
- Consolidate: the product rule, and the quotient rule it drags along
- Practise: Derivative Rules Practice, second set
Things to do before our next class
- Journal: explain to a younger student why the derivative of a product is not the product of the derivatives.