So Equatio from @texthelp is a Google plugin that speeds the process of putting equations into Google apps. Now with Google Docs there is already an equation editor that is fairly easy to use but one of the nice things about this is the input choices, two of which are hand writing (great if you have a touchscreen Chromebook) or by voice. Though what you get is a non editable image, the thing that makes up for it is that with Google Forms you not only get equations that both you can use for creating questions but that students can use when they write their answers, not to mention that they can also add graphs (using the @Desmos API). Pretty cool. Thanks to @Esping_Math for pointing this one out.
Curriculum Tags: All https://chrome.google.com/webstore/detail/equatio-math-made-digital/hjngolefdpdnooamgdldlkjgmdcmcjnc

I like this activity from @Mr_Stadel that has students first informally graphing linear relationships in contexts and then works it's way to describing them in words, with numbers and equations.
Curriculum Tags: Gr8, MPM1D, MFM1P https://teacher.desmos.com/activitybuilder/custom/5aa4d254e072830479e2c81b

Are you looking for some resources on women in mathematics? Well @LetsPlayMath has you covered. This is a nice summary of the contributions of 15 women to mathematics. Nicely done.
Curriculum Tags: All https://denisegaskins.com/2018/03/26/playful-math-carnival-115/

Even if you don't like their music you have appreciate all the effort OKGo puts into their videos. Now on this site they have turned some of these experiences into an educational sandbox. You get a small sense of it with this behind the scenes video but there is much more. Check the site out.
Curriculum Tags: All https://okgosandbox.org/#intro

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These images from @AlexOverwijk really show that you don't need any fancy tech to get your kids engaged in math. Just ask questions in the right way.
Curriculum Tags: MPM2D, MBF3C, MCF3M, MCR3U https://twitter.com/AlexOverwijk/status/979381349625815040

Literally #openmiddle question. y=x*2+__x+24 then y=x*2+__x-36.
Impressed with what I observed and heard from my #mbf3c S’s. Best moment “0h for this one the y intercept is the vertex!”

Well it has taken weeks but my partner in crime (Gisele Jobin) and I have finally completed this video. We have talked about doing it for a while but it seems it has finally got done. We wanted to develop a progression of questions to develop the fraction multiplication algorithm. Of course we know that it's the kind of thing that is so easy to tell students then let them practice but like many other things that students are told, they mix them up with other things and rarely ever understand them in the first place. So this longish video is our way of encouraging you all to develop the algorithm instead of just giving it to them. We used the Mathies Fraction Strips app but any sets of fraction strips will do. Next up is the fraction division algorithm.
Curriculum Tags: Gr7, Gr8 https://www.youtube.com/watch?v=IlJ1ZyAbSm0

Here is a nice little short puzzle/sorting activity for types of polynomials from @mathequalslove. Students are given a deck of polynomial pieces and some cards with types of polynomials (eg Cubic Polynomial). And they have to place all the cards to create polynomials to match.
Curriculum Tags: MPM1D, MFM1P https://mathequalslove.blogspot.ca/2018/03/building-polynomials-activity.html

On this episode of Note to Self they speak to @MonaChalabi who is the data editor for The Guardian who does some very cool stuff both in the publication and on her Instagram feed. She picks interesting data sets and creates interesting visualizations to represent them. Listening to a podcast doesn't do her work justice but listen at the link below and then and then check out her feed.
Curriculum Tags: MDM4U https://www.wnycstudios.org/story/data-mona-chalabi/

@mathletepearce is hard at work with his new site Math is Visual and has added another video on multiplying integers. Watch the video but also follow the link to get the full annotations for the video
Curriculum Tags: Gr8, MPM1D, MFM1P http://mathisvisual.com/visualizing-integer-multiplication/

Determine how far you should stand so that you see your partners eyes in the mirror! Boom! Super satisfying when the math “works”! #iteachmathpic.twitter.com/TlmCMGCC2Z

What's Going on With This Graph? That is a new(ish) feature of the NYTimes. It's been running since September and on the second Tuesday of each month (from September until May) they pick a graph that they've used and ask student's what they notice and wonder (and other questions). The student's interact via moderated chat (@MFAnnie did the moderation this week) with answers revealed on the Thursday of the same week. You can see all the previous instalments at the link below. Get your kids to check them out and interact.
Curriculum Tags: MBF3C, MAP4C, MDM4U https://www.nytimes.com/column/whats-going-on-in-this-graph

It was Pi Day this week. Here is a link to my page of over 80 links that I've collected over the years. Save it for next year.
Curriculum Tags: All http://davidpetro.org/PiDay.htm

He was clearly getting ready for PiDay with this 3Act task when @mathletepearce put this one together. How many tiles around the circle?
Curriculum Tags: Gr8, MPM1D, MFM1P https://tapintoteenminds.com/3act-math/tile-circle/

I recorded a guest spot on the 10 Minute Teacher podcast (from @coolcatteacher) this week. Up until a week ago I had not heard of it but since, I have caught up on a bunch of episodes. They are not always math related but they are always full of teacher tips. For example, check out the link below from @aap03102 who talked about how he celebrates Pi Day in an epic way (seriously, he does some cool stuff). Listen to his episode at the link below and check out the rest of the math related episodes but clicking on the Podcast tab above.
Curriculum Tags: All http://www.coolcatteacher.com/epic-ways-celebrate-pi-day/

For PiDay this week @Story_Collider had two math related stories. The first is a story of what inspired a reluctant mathematician Ken Ono (one of the producers of the movie "The Man Who Knew Infinity"). The second is a powerful story of racial and gender discrimination in the math community and elsewhere from @pwr2dppl. And if that is not enough, check out her thesis. It's written in a way that I have never seen a math/science thesis written. This quote from the prologue should pique your interest: "....try to read a math paper and think, “Oh my goodness what on earth does any of this mean why can’t they just say what they mean????”"
Curriculum Tags: All https://www.storycollider.org/stories/2018/3/5/in-honor-of-pi-day-stories-about-math

Here's a nice little websketch from @DpScher on placing fractions on a number line. It encourages trial and error and has a randomizing feature so that your students can practice. Watch the "how to" video to see how to use the bank of numbers on the sketch.
Curriculum Tags: Gr7, Gr8 http://www.sineofthetimes.org/deducing-the-mystery-fraction/

A couple of nice Geogebra sketches from @dynamic_math. This first one randomly generates a linear equation (in standard form) and asks students to drag points to represent the equation's line.
Curriculum Tags: MPM1D, MFM2P https://www.geogebra.org/m/s5CmNkbb

The second one is a neat little sketch to have students solidify their understanding of trig ratios.
Curriculum Tags: MPM2D, MFM2P https://www.geogebra.org/m/F5a9GDd6

After listening to the above podcast, I found this video from Ken Ono on Pi showing an expansion of Pi I hadn't seen before. Note at the end, it's not a mistake but a notation of adding fractions within fractions.
Curriculum Tags: All https://www.youtube.com/watch?v=CwSbX0CW9hA

Some fun stuff on this math based Tumblr like this circular analysis of the Twitter logo. But go to the link to see all the good stuff
Curriculum Tags: All http://curiosamathematica.tumblr.com/

So on his latest post @ddmeyer talks about an event where he taught kids in front of hundreds of teachers. Interesting concept. Read the whole post for the details. But that's not what I zeroed in on. The thing that really got me was this idea of the rough draft. That is, reframing the way we ask our students to attack problems. When we ask students questions that might be hard they often will hesitate for fear of being wrong. What ever we can do to help them overcome that fear the faster they can get to doing math. By asking them for their first or rough draft that allows them to be OK with making mistakes because, hey it's a first draft. Of course, first, you have to ask them a worth while question.
Curriculum Tags: All http://blog.mrmeyer.com/2018/rough-draft-talk-in-front-of-hundreds-of-math-teachers/

I've been working on this activity on and off since the summer but finally have a working copy. It is an introduction to two dimensional vector equations. At the end there are a couple of slides with random generated questions for practice. Thanks to @Eluberoff for helping me figure out the vector arrows.
Curriculum Tags: MCV4U http://engaging-math.blogspot.ca/p/desmos-activities_10.html

I also updated my equation strips activity to deal with equations in the form Ax + B = C and now Ax - B = C. The premiss of this activity is to represent two step equations as these strips. The lengths of the strips represent the values in the equations and the fact that they are equal help visualize the equality. Now by adding equations in the form Ax - B = C means those strips are different sizes but the subtraction is represented by the gap. Regardless, students really seem to understand equations just a little bit better when using these. There is a hands on version and there is also an interactive websketch that will let you create your own for any equation.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P http://engaging-math.blogspot.ca/2017/01/equation-strips.html

These Zukei puzzles are kind of fun for geometric shapes. The idea is that given a type of geometric shape, you have to draw it using the dots given as the outline. Here @MarkChubb3 has made a bunch (based on @mathequalslove's original post) and linked to her original post.
Curriculum Tags: Gr7, Gr8 https://buildingmathematicians.wordpress.com/2018/03/08/zukei-puzzles/

I'm sure you are aware of @Mr_Stadel's Estimation 180 and hopefully you have used some of them in your class to help kids become better at estimation. Recently he posted about how to use the @Desmos activity builder to extend that structure and help get students to think deeper on their estimation skills. He lays it out on this post and shows how you can do that in this post.
Curriculum Tags: All http://www.estimation180.com/blog/estimation-180-and-desmos

Some fun stuff to help your students link about linear functions from @G_BRGMN. Sure there's a WODB but I like the idea of asking students to notice and wonder about some of those things that we often take for granted as teachers (like the point slope formula for a line). Some nice ways to tweak the stuff you are already doing in your class and get your kids talking at the same time.
Curriculum Tags: MPM1D, MFM2P https://countjoy12.wordpress.com/2018/02/03/8th-grade-unit-3-functions-part-3-point-slope-form-standard-form/

Do you want to provide your students an opportunity to practice with equivalent fractions then you might want to use this set of 51 cards created by @mathequalslove. 51 because they match all the pieces of the standard fraction tower. She uses it like a card sort where students have to sort fractions in groups that are equivalent using the actual fraction strips to help. Download the template at the link below.
Curriculum Tags: Gr7, Gr8 https://mathequalslove.blogspot.ca/2018/02/equivalent-fractions-card-sort.html

Here is a nice piece on the problems with online teaching videos for math from @rogonic. The gist of it is that with videos the focus can only be procedural aspects of mathematics and that mathematics can be so much more. I would go so far as to say that if the experience students receive in a math class looks a lot like those videos (eg Khan Academy) then those videos are a great resource. However, that also tells me that those student's teacher could be literally be replaced by the Internet. We can do so much more than just teach procedures in a math class. So let's do it.
Curriculum Tags: All https://learnandteachstatistics.wordpress.com/2018/02/15/probs-with-videos-for-maths/

I like this post from @MathDenisNJ highlighting some of the great strobe images from the Olympics and connecting them to trig and quadratic functions. Check the link out for all the images and if you want more of that type, I have a bunch of quadratic ones here.
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C http://denissheeran.com/why-relevance-matters/