I start with this warmup from Illustrative Mathematic’s lesson on elimination: Their materials include a nice example analysis activity as…
Faded Practice – Substituting to Solve Systems of Linear Equations
First, an estimation warm up to make sure everyone understands what we’re trying to do. Then, a mistake analysis problem,…
Completing the Square
Here’s what I’ve used in class this week, mostly to good effect.
Implicit Differentiation Examples
Here are some example-ish tasks I used to introduct implicit differentiation. First, a warm up, to help students notice and…
Comparing Explicit and Implicit Differentiation
Here was the original problem from Calc Medic: The thought of comparing two strategies made me think of the Compare…
Mistake+Example for finding the distance of a trip
This mistake came via Bowman Dickson: Here is the example/mistake that I came up with for sharing with students: I’m…
Faded Practice with Equations of Lines
I took these images from the Kuta Software worksheets (actually the answer keys) and am turning them into some faded…
Finding the Constant of Proportionality
Looks like I took the table from the lesson summary from one of these lessons and wrote an example activity…
Solving Equations that have fractions
Here are two worked-out strategies, in the spirit of Compare & Discuss — a great site for worked example activities.…
Inscribed Angle Mistake
Here’s one of those mistakes that crop up every year. When I hit one of those, I try to “call…
Mathematics with Worked Examples 