Links to lessons, resources, and slides are available below.
(Unable to find what you’re looking for? Drop me a line.)

Presentations

• Elementary Slides (large file, be patient)
• Secondary Slides (large file, be patient)

1. Visual Patterns (+ Introduction to www.desmos.com)

• Desmos Calculator
• VisualPatterns.org
• Visual Patterns-themed blog posts (via reasonandwonder.com)
• Match My Line
• Match My Parabola
• Learn Desmos
• Desmos-themed blog posts (via reasonandwonder.com)
• Search for Desmos-themed blog posts (from the entire MTBoS)

2. Estimation 180

• Estimation180.com

3. Open the Middle

• Video Games and Making Math More Like Things Students Like (via Dan Meyer)
• Open Middle Lessons (via reasonandwonder.com)
• Open Middle Website
• Open Middle Student Handout
• Video Games and Making Math More Like Things Students Like (via Dan Meyer)
• Mindset (by Carol Dweck)
• Collatz Conjecture (via wikipedia.org)

4. Twitter + Blogs

• Why Twitter?
• 5 Things Every Teacher Should Know About Twitter
• MTBoS Directory
• mathtwitterblogosphere.weebly.com
• exploremtbos.wordpress.com (Missions!)
• Twitter Math Camp (seriously, this is a thing)
• Twitter.com (join the fun)
• WordPress.com (hands down, the best free blogging platform)

5. Would You Rather Problems (+ Google Drawings)

• wouldyourathermath.com

6. Introduction to Desmos Activities

• teacher.desmos.com
• Learn Desmos
• blog.desmos.com

7. Turning Students Into Posers + Solvers

Lessons

• Charge!
• Lift the Rainbow (How many Skittles are in the barbell plates?)
• How Much Does A 100×100 In-N-Out Cheeseburger Cost? (via Robert Kaplinsky)
• Automatic Change Dispenser
• The Stelvio Pass in northern Italy (via Daily Overview)
• The Running Game
• Mailbox Countdown
• Double Stuf vs Mega Stuf (via Dan Anderson)
• Penny Pyramid (via Dan Anderson)
• How Many Gumballs Fit In The Gumball Machine? (via Robert Kaplinsky)
• How Big Is The Vehicle That Uses Those Tires? (via Robert Kaplinsky)
• How Much Money IS That?! (via Robert Kaplinsky)
• Van Gogh’s Starry Night in Post Its (via Nathan Kraft)
• Stacked Cups (via Nathan Kraft) 
• Triangle of Toothpicks (via Nathan Kraft)
• Ticket to Ride (via Dan Meyer)
• Super Stairs (via Dan Meyer)
• Car Caravan (via Dan Meyer)
• Filing Cabinet (via Andrew Stadel)
• Deodorant (via Andrew Stadel)
• Ball Pyramid (via Bob Lochel)

Resources

• How to Solve It (by George Polya)
• Ever Notice What They’d Wonder? (Annie Fetter’s Ignite Talk)
• Fawn Nguyen’s Blog
• 101 Questions
• Dan Meyer’s Three Act Tasks
• Michael Fenton’s Blog
• Michael Fenton’s Lessons
• Andrew Stadel’s Lessons
• Nathan Kraft’s Virtual Filing Cabinet
• Robert Kaplinsky’s Problem Based Lessons
• Problem Based Search Engine (via Robert Kaplinsky)