# Reason and Wonder Lessons

### Problem Based Lessons

Engaging tasks with a visual hook, inspired by Dan Meyer's three acts model and Robert Kaplinsky's collection of real-world lessons.

### Open Middle Problems

Rich tasks where the context is the math. Inspired by the problems at Open Middle, Inquiry Maths, and Nrich Maths.

### Desmos Lessons

Activities and explorations designed with Desmos, the free and fantastically beautiful online graphing calculator.

Pasta Circle
How many pieces of pasta are there?
7.G.B • 7.RP.A

Average Value
When is the average value zero?
AB.3.B

Match My Parabola
Can you plot a parabola through the points?
8.F.B • HSF.IF.C • HSF.LE.A

Charge!
When will the phone be fully charged?
8.F.A • 8.F.B • 8.SP.A

Sum to One
Find unit fractions whose sum is one
MP.1 • MP.7 • 4.NF.B • 5.NF.A • 7.NS.A

Match My Line
Can you graph a line through the points?
7.RP.A • 8.F.A • 8.F.B • HSF.IF.C • HSF.LE.A

Here Come the Thunder?
Will the OKC Thunder make the playoffs?
6.RP.A • 7.RP.A

Point, Point, Slope
Create the steepest line possible
8.EE.B

Area Boss
What is the largest possible triangle?
5.G.A • 6.G.A • 7.G.B

Morning Run
What is the number of total runs?
7.RP.A • 7.NS.A • 7.EE.B • 6.RP.A

Two Fractions
Create the greatest expression possible
7.RP.A

Lift the Rainbow
How many Skittles are in the barbell plates?
8.G.C • HSG.GMD.A • 6.RP.A • 7.RP.A

Produce and Prices
What is the total balance due?
7.RP.A • 6.RP.A • 5.NBT.A • 5.NBT.B