I’ve found it helpful to store links to things here if I want to be able to find them quickly for my own use in the future. If they’re useful to you, that’s all the better!
- Generate a scatterplot with any r-value with this Geogebra applet by David Wees.
- Vocab party files to support ELL students in Algebra 1, by Rick Barlow. (The blog post includes a link to the actual files)
- This Teachers Pay Teachers store is for Algebra 1 and seems pretty good. I haven’t checked it out in detail yet.
- Multiplying binomials using algebra tiles on Desmos. I’m not sure who created this, but it’s nice. I’ve also made a version in the Activity Builder here.
- Julie Reulbach created this helpful list of Algebra 1 teachers on Twitter.
- Drawing a pet house using linear and non-linear graphs on Desmos. By MathyCathy.
- In a unit on function transformations, I wonder if advanced students might be interested in this video on a visual, transformational approach to General Relativity.
- Fascinating visual of which quadratics are factorable, and which are not. By Scott Farrar.
- Visual explanation of why anything^0=1. By me.
- Visual riddle about slope. On Desmos. By Nick Corley. (And my backup copy)
- A linear(ish) situation with a negative slope. Harry O’Malley pounding a nail into a board.
- Graphing stories game, by David Wees.
- A linear situation with a positive slope. Harry O’Malley putting little cubes in a cup.
- Domain and range card sort with feedback, by Bob Lochel. (And my backup copy).
- Hilarious task about modeling linear scenarios (dancing to “Shout”) that employs slope-intercept and point-slope form. By Paul Jorgens. (And my backup copy).
- How double number lines can be transformed into graphs, by Suzanne von Oy. (And my backup copy). Related: Middle School Shuffle, sent to me by Kate Nowak (not sure if she made it herself). And a version by Eric Berger (with my backup copy).
- Pumpkin time bomb, by Jon Orr.
- Desmos activities for Algebra 1, by Nick Corley.
- Super Mario activity on vertex form of a parabola, by John Rowe.
- Decimal-fraction equivalence on Geogebra.
- Completing the square Desmos lesson, by Bob Lochel (and my backup).
- Completing the square paper lesson (perhaps for use after the Desmos one), by David Wees.
- Explanation of what a radian is, by Luke Walsh. (And here’s my backup copy in case he deletes it).
- Visualization of sin, cos, tan and reciprocals on the unit circle. By Ben Sparks.
- 1-minute dance video on end behavior and multiplicity of roots. By Julie Reulbach. Note that the 6th-degree function should be labeled “even end behavior,” not “even function.” Just discuss that with your kids.
- Visualization of exponential growth (bacteria multiplying). By Anna Blinstein.
- Desmos calculator that zooms in on any region of a graph, by @davidkbutlerUoA
- Twitter thread (which I haven’t completely read, but I’m bookmarking here for further reading) about how to think about what a function is.
- Self-referential multiple choice tests (like a riddle). By Mike Lawler.
- Middle school math club topics. By Benjamin Leis
Probability and Combinatorics
- Harry O’Malley on the largest number he’s ever experienced.
- A summary of a study on the benefits of spaced retrieval practice. Summary by Efrat Furst. Study by Rawson, K. A., Dunlosky, J., & Sciartelli, S. M. (2013), “The power of successive relearning: Improving performance on course exams and long-term retention.”
- Some day I may decide to read the articles in this twitter thread started by Efrat Furst.
- How to make your own Desmos Graphing Stories lesson:
- Problem-based curriculum maps, by Geoff Krall.
- How to 3d print Desmos graphs, by Martin Joyce (@martinsean).
- Screen locks on Desmos, by Jay Chow.