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Number Tricks is a lesson that involves writing and simplifying expressions. It demands the higher order thinking skills called for in the Common Core in several ways. 1) The students are to write a mathematical model for a trick given to them. 2) They are to create their own trick and offer the algebraic expression that represents…
I started a series of new warm ups for my MPM2D class today. My goal is to sneak in factoring as warmups throughout the semester. By the time we need to learn it (like when we need to factor to sol…
I'm Sherrie a 7th Grade Math Teacher Extraordinaire.
This realworld problembased lesson challenges students to describe Ms. PacMan using the terms rotations, reflections, and translations.
I emphasized that there are 5 syllables so you need 5 points. I had the students hold up their fists and then count off with their fingers while saying, Box and Whiskers Plot over and over, and over. After going over vocabulary and doing some easy examples, I had the students access their own measurement…
I feel like most statistics teacher have the problem of getting kids to understand histograms. Yes. They kids can tell you that histogram
Have you ever wanted your math students to get better at using math language? Have you ever wanted your math students to be able t
Area of Saskatchewan is a 3 act math task created specifically for the #Canada150Math Challenge about Area of a Trapezoid.

One of the joys of my job as a math coach is having conversations with colleagues about the hows and whys of math class. Often, the best conversations come from unplanned meetings, just chewing the fat about what is happening in classrooms. Earlier this month, I visited a secondyear high school teacher with a quick…
This Week’s Skill Factoring quadratic trinomials. eg. We can express quadratic trinomials like x2 – 7x – 18 as the product of the two binomials: (x – 9)(x + 2). If you find …
I spent the weekend at the Park City Mathematics Institute's Teacher Leadership Program outreach event in Denver. It's pretty awesome spending two days hanging out with a small group of passionate teachers, doing math and talking about teaching. I had a bunch of takeaways from the weekend, from some fun math we did to great…
I LOVE Robert Kaplinsky. Okay, I like him a lot, but I love his lessons! I read Brian Miller's post on how he implemented Robert's lesson "How did they Make Ms. PacMan" and decided we needed to do it too. I copied Brian's game board, and enlarged it to fit on a page. I colored in the…
Last week in Algebra 1, we used M&M's to create scatter plots. Goals for the lesson: Be able to define what a scatter plot is B
Before school ended, I had the pleasure of running a Box & Whisker Polygraph created by 2 colleagues, Tim Rochester and J.J. Martinez in Carmen's 6th grade classes. She had not yet introduced Box & Whisker Plots. Afterwards, I brought the activity to Peytra's 6th grade classes. The following is a summary of what happened…
Let's develop a math project to challenge students who have demonstrated a mastery of multiplication and are ready to explore its applications. We'll count the
Hi there! So I haven't exactly been pumping out record numbers of blog posts since I shifted from the classroom to my current gig at Desmos. This lack of posts is partially related to general busyness, but it's also related to this question that I've been wrestling with for the past few months: I'm not in the classroom, so... what would…
Last week, I walked away from Leading and Sustaining a Coherent Vision for Teaching and Learning Mathematics with Dr. Timothy Kanold, thinking, mind overflowing, wondering...how I can I share what I've learned with my colleagues to impact student learning? I had several aha's over the 2 days. Some were things I *knew* but refined how I saw the…
I first started doing number talks (also called math talks) to start class when I taught 8th grade. If you're unfamiliar with number talks, this site by Fawn Nguyen has some great stuff to get started. My first year teaching high school (Algebra II, Precalculus, and Calculus) I stopped, opting for Visual Patterns, Open Middle,…
