Math Links for Week Ending Jan 24th, 2020

Featured Links
There is no secret of my love of Desmos so I'll start with couple of announcements. One is a new activity and the other is an opportunity. First, the new activity about scientific notation. It's a relatively short activity but it has nice visuals and has some student choice involved.
Curriculum Tags: Gr8, MFM1P, MPM1D
https://teacher.desmos.com/activitybuilder/custom/5e28b8764fbfa25124f88562

Secondly, if you like Desmos and find yourself often talking to other teachers about it, then Desmos wants you. They are looking for experienced teachers to help spread the word and present workshops about Desmos. If you want to become a Desmos Certified Presenter, then click the link below.
Curriculum Tags: All
https://jobs.lever.co/desmos/97773b88-eeb5-4d30-aaa2-b7cb772aa6a2

Resource Links
I like this activity from @emergentmath. It's about transversals and parallel lines. It starts with a favourite strategy of mine called concept attainment where students see examples and non examples. But the crux of the lesson is a simple activity that relates to a real map of streets. We could probably all do a similar activity using a screenshot of the streets in our own town.
Curriculum Tags: Gr8, MPM1D, MFM1P
https://emergentmath.com/2020/01/04/transversals-lesson-street-views/

I always appreciate how @MissCacul8 takes a math concept and puts some bling on it. In this case it's her kids doing a project on the unit circle by having to make a representation it. It seems simple enough but click on the link and see what her kids did. So many pies and cakes.
Curriculum Tags: MCR3U, MHF4U
http://misscalculate.blogspot.com/2019/11/unit-circle-art-v.html






I've always been a fan of Open Middle problems. I think that they give students the licence to be correct with more than one way of doing things. And you can certainly get some open middle problems at the https://www.openmiddle.com/ but now @RobertKaplinski now has released the Open Middle book. This has all the info you need to get started and learn how to facilitate those types of questions.
Curriculum Tags: All
https://www.stenhouse.com/content/open-middle-math




Video Links
In this video @StandupMaths tries to find the "average" person and along the way finds some issues instead.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://www.youtube.com/watch?v=NbiveCNBOxk

Image Links
Some interesting statistics here dealing with
Curriculum Tags: MDM4U

Pre-2010, 50g of crack-cocaine got you a mandatory minimum 10 years in prison.

Post-2010, that threshold was raised to 280g, which resulted in this .... uhhh suspicious drug seizure graph.#OMGraph #iteachmath h/t @JohnHolbein1https://t.co/q8L2lX9rx7 pic.twitter.com/IRwcCsk6tm

— Dan Meyer (@ddmeyer) January 23, 2020

Math Links for Week Ending Jan. 17th, 2020

Featured Links
If you are looking for someone to follow with particularly good dynamic geometry skills then you might consider @giohio. Check out these two sets of proofs without words for Pythagorean Theorem. One of them in @Geogebra and one of them in @Desmos.
Curriculum Tags: Gr8, MPM1D, MFM1P, MFM2P
https://www.geogebra.org/m/jFFERBdd
https://teacher.desmos.com/activitybuilder/custom/5adc7bfced2ada678516940e

Resource Links
Looking for some online training then you might consider this series put on by @math_inquirer and @FlippingFocus. It's an " interactive and online, professional learning opportunity designed and offered to help educators meet the sophisticated needs of teaching," Check the details out at the link below if you are interested.
Curriculum Tags: All
https://www.flippedpl.ca/balance.html


Getting kids to move around in math class is a great idea and @SaraVDWerf has your back when it comes to ways to facilitate that movement using many of those great internet resources that have been around for a while like WODB, Would you Rather, Open Middle and more. Check out her post on how to get kids to move with all of these resources (and more).
Curriculum Tags: All
https://www.saravanderwerf.com/mathmovement-ideas-with-well-known-math-routines/



Video Links
Who can argue against the fact that math and art aren't connected? Such precision.
Curriculum Tags: All
https://twitter.com/FogleBird/status/1204253487703478274

Plotting it! This one is very satisfying to watch. Also trying out a new pen. #plottertwitter pic.twitter.com/jT7gC3OVSf

— Michael Fogleman (@FogleBird) December 10, 2019

Image Links
Need some ideas to focus on number sense with your students in terms of the upcoming Super Bowl? @DonFraser9 has your back
Curriculum Tags: Gr7, Gr8, MFM1P
https://twitter.com/donfraser9/status/1217489892864937990?s=21

NUMBER SENSE &. SUPER BOWL in 2020. ⁦@Mathgarden⁩ ⁦@MathletePearce⁩ ⁦@davidpetro314⁩ ⁦@MatthewOldridge⁩ ⁦@paul_math⁩ #MTBoS #iteachmath #mathchat ⁦@MrsBedfordclass⁩ ⁦@AlexOverwijk⁩ pic.twitter.com/3SsfqrF3ak

— Don Fraser (@DonFraser9) January 15, 2020

Math Links for Week Ending Jan. 10th, 2020

Featured Links
It looks like @MrDeltaMath has been busy. If you have not ever looked at his site, you are really missing something that could help your students work through problems. In this case he's gone through geometry proofs but there are so many other dynamic solutions on this site for other math topics it won't matter what you (or your students) are looking for and as a bonus, it's free.
Curriculum Tags: All
https://www.deltamath.com/

Happy to announce that I have finished the Geometry Proofs section on DeltaMath. It took 7 months, but I manually created & inputted 350 unique proofs and students can prove any way they choose. Lots of scaffolded modules too. Please share w/ Geometry teachers! #iteachmath #mtbos pic.twitter.com/o4HQoNAN3R

— Zach Korzyk (@MrDeltaMath) January 9, 2020

Resource Links
This is a fairly simple set of slides from @LukeSelfwalker students are asked to choose the smallest number from the list that no one else has chosen. The display of the class's data shows up as a dot & box and whisker plot. There could be a lot of places for discussion here. From the strategy for choosing a value to the way the data is organized.
Curriculum Tags: MDM4U
https://teacher.desmos.com/activitybuilder/custom/5e13ffc10199f84025da77a8

For a day oneish type of activity, I created a few slides of "Pick the smallest number that no one else picks." The idea is bring up how student engagement is vital to our daily classroom activities and how we can learn from what other people contribute.https://t.co/CCE33jteLI pic.twitter.com/Bed4ev27Zj

— Luke Walsh (@LukeSelfwalker) January 7, 2020

Here's another great one from @LukeSelfwalker. This time its estimating radian angles. Such simple but effective practice and I like how he has students reflect at the end on how much they have done.
Curriculum Tags: MHF4U
https://teacher.desmos.com/activitybuilder/custom/5e10b733de57050e8d7b9c9f

5 different slides for practicing angle measurements on the unit circle. I purposefully chose not to track how many are correct. Starting to think how correctness during practice is privacy for students.https://t.co/04vrPnjiNG pic.twitter.com/ST6Qxg11RF

— Luke Walsh (@LukeSelfwalker) January 7, 2020

I am a big fan of simple games that help reinforce math concepts. In this case it's probability based with this simple sum game with two dice. @MBurnsMath does a great job of explaining it and despite the fact that it starts out as an activity for grade 2 students, there are definitely ways to have older students use it as a math starter. Thanks to @MarkChubb3 for pointing out this one.
Curriculum Tags:  Gr7, Gr8
http://www.marilynburnsmathblog.com/one-of-my-all-time-favorite-games/

Though this activity from @mathface22 is long, it provides lots of practice and for students who are learning to sketch polynomial functions. I like how it allows you to trace out the function you think represents the equation and then shows you the correct graph.
Curriculum Tags: MHF4U
https://teacher.desmos.com/activitybuilder/custom/5e0a41c10279c6341abf838c

There is a new activity released from @Desmos to introduce the idea of dilations. Only 8 slides but nice and interactive as you would expect.
Curriculum Tags: Gr7
https://teacher.desmos.com/activitybuilder/custom/5e13560bbefb180dcd92d427

💖 NEW ACTIVITY FRIDAY 💖

Play around with the dilation machines in Sketchy Dilations!https://t.co/lG88JSuAS2 pic.twitter.com/w8o1Oml9qY

— Desmos.com (@Desmos) January 10, 2020

Video Links
Looking for help in creating your own @Desmos Activities? Then check out @MJFenton's webinar on that very topic.
Curriculum Tags: All
https://www.youtube.com/watch?v=fxHCihwDCiI

Image Links
Even though most of these are politically based, there are some nice ones that are not
Curriculum Tags: MDM4U
https://fivethirtyeight.com/features/the-56-best-and-weirdest-charts-we-made-in-2019/

Math Links for Week Ending Jan. 3rd, 2019

Featured Links
I really loved this story from @CraigFayComedy on the @storycollider about living with #dyscalculia (and he still became an engineer). Something every #math teacher should hear
Curriculum Tags: All
https://www.storycollider.org/stories/2019/11/5/late-diagnosis-stories-about-being-diagnosed-as-an-adult


Resource Links
It's good to have more activities to help with probability. So this is a nice little activity from @Giohio to facilitate this.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://www.desmos.com/calculator/wnlneoawbk

Enjoy this @Desmos "Would you rather?" @DailyDesmos @madewithDesmos @AlgebraDesmos https://t.co/3dlptF9LOH pic.twitter.com/qahlG7QOZw

— Steve Phelps (@giohio) January 3, 2020

Here @RobertKaplinski gives the low down on what Open Middle problems are and how you could use them
Curriculum Tags: All
https://www.edutopia.org/article/getting-heart-what-students-know-math

Educator @robertkaplinsky shares a way to structure math problems to assess students' *conceptual* understanding.https://t.co/JFGT6wnx3t

— edutopia (@edutopia) January 2, 2020

I have been cleaning up some of my @Desmos activities for release. The first one is to help students with tessellations
Curriculum Tags: Gr7
https://engaging-math.blogspot.com/p/desmos-activities_10.html

[Updated Post] Have students practice finding #tessellations and then create their own for the rest of the class to find with this @Desmos activity (with Challenge Creator)https://t.co/JUNFclEWlI#mathchat #MTBoS #ITeachMath pic.twitter.com/LmBQCGyEPT

— David Petro (@davidpetro314) January 4, 2020

The next ones are for practicing completing linear patterns given a numerical beginning of various patterns.
Curriculum Tags: Gr7, Gr8
https://engaging-math.blogspot.com/p/desmos-activities_10.html

[Updated Post] Students practice working with linear patterns given a few numerical values by completing the table and graphing the points with this @Desmos activity (with Challenge Creator) that self checks student work. https://t.co/JUNFclEWlI#mathchat #MTBoS #ITeachMath pic.twitter.com/A5uCdu6HXA

— David Petro (@davidpetro314) January 4, 2020

And the last one is for practicing subtraction of integers
Curriculum Tags: Gr7, Gr8
https://engaging-math.blogspot.com/p/desmos-activities_10.html

[Updated Post] Students can practice (self checking) basic subtraction of integers questions and then create their own for the rest of the class to solve with this @Desmos (with Challenge Creator) Activity.https://t.co/JUNFclEWlI#mathchat #MTBoS #ITeachMath pic.twitter.com/U0UqbNCjn2

— David Petro (@davidpetro314) January 4, 2020

Video/Audio Links
Here's a great idea to help students have fun with linear functions, or quadratic functions or any polynomial function.
Curriculum Tags: MPM1D, MFM2P, MPM2D, MCR3U, MBF3C, MCF3M, MHF4U
https://www.youtube.com/watch?v=K54ildEW9-Q

Here is a new podcast from @OAMEtalks. This month featuring @KanekaTurner giving a preview of her upcoming webinar "Lesson Structure and Routines that Foster Agency and Equity"
Curriculum Tags: All
https://talks.oame.on.ca/season-2





Image Links
Some Happy New Year math
Curriculum Tags: All
https://twitter.com/MathsEdIdeas/status/1211664354669735936

Math up your countdown to 2020... #HappyNewYear #HappyNewYear2020 #maths #math pic.twitter.com/wLnxBBZiVo

— Maths Ed (@MathsEdIdeas) December 30, 2019

And some more New Year Math. Thanks to Mark Garant for this one.
Curriculum Tags: MHF4U

Math Links for Week Ending Dec. 27th, 2019

Featured Links
I have been playing around with these linear representations of equations (Equation Strips) for a while now. And now I have a @Desmos version of them that work as an activity (with video instructions for customizing) or as a stand alone demonstration tool. Check out all the versions (paper & pencil, websketch, @Desmos etc) at the updated link below. Perfect for any beginners of solving equations.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
http://engaging-math.blogspot.com/2017/01/equation-strips.html


Resource Links
Here is a nice little activity from @YummyMath about Pythagorean triples. It connects colouring and patterns in the numbers.
Curriculum Tags: Gr8, MFM1P
https://www.yummymath.com/2019/pythagorean-triples-and-coloring/







A nice 3D Christmas tree using 2D Desmos from @Giohio. Great fun for kids dealing with advanced functions.
Curriculum Tags: MHF4U
https://twitter.com/giohio/status/1209611238130536450

Modified the Christmas Tree @Desmos app by applying more of @DaveCesa 's Desmos-Jedi teachings to make a "solid" treehttps://t.co/yZ5o5Goe9l https://t.co/HCheSx6j1J pic.twitter.com/pCmXD16X3U

— Steve Phelps (@giohio) December 24, 2019

I like this proof without words to connect the sum of squares to the sum of cubes. It really could be used to talk about mathematical proof with any grade. Especially since it comes in the form of a @Geogebra sketch
Curriculum Tags: All
https://twitter.com/dment37/status/1210187636545069057

Proof without words : Sum of the cube numbers @geogebra https://t.co/6tUM4ak7Gj#geogebra #MTBoS #ITeachMath #math #maths #EdTech #geometry #proof #MathEd #FigureThat pic.twitter.com/7u5gQKcFTv

— Daniel Mentrard (@dment37) December 26, 2019

Video Links
This new video from @3blue1brown gives some nice connections between probability and visualization using areas and psychology.
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=HZGCoVF3YvM

Some Christmas art from @LukeSelfwalker
Curriculum Tags: All
https://twitter.com/LukeSelfwalker/status/1209169769431273474

Last Mathmas,
I graphed you a heart,
the very next day,
it sπraled away. pic.twitter.com/lx8R6db3uV

— Luke Walsh (@LukeSelfwalker) December 23, 2019

And here is the explanation of why the above animation works from @mathologer. It contains the Fibonacci sequence and multiplication tables.
Curriculum Tags: All
https://www.youtube.com/watch?v=qhbuKbxJsk8

And here is another proof without words. Great for showing how visual math can be beautiful.
Curriculum Tags: All
https://twitter.com/solvemymaths/status/1209061160940650496

The sum of consecutive odd numbers (starting at 1) always equals a square number pic.twitter.com/XsJfdsEtNP

— Ed Southall (@solvemymaths) December 23, 2019

Image Links
Who doesn't like a good multiplication of binomials image?
Curriculum Tags: MPM1D, MFM2P, MPM2D
https://twitter.com/StudyMaths/status/1209460617725333504

(2x+4)² = 4x² + 16x + 16 = 4(x + 2)²

Apparently this is not appropriate at the dinner table. pic.twitter.com/1kVaESG4ph

— Jonathan Hall (@StudyMaths) December 24, 2019

Math Links for Week Ending Dec 20th, 2019

Featured Links
Two new activities released by Desmos. The first helps students solidify ideas behind distance time graphs
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://teacher.desmos.com/activitybuilder/custom/5ddbf9ae009cd90bcdeaadd7

ANOTHER new activity?

In 🐢 Turtle Crossing students create distance-time graphs to help the turtle SKIP PAST THOSE SNAKES!https://t.co/oZ4ZaG74a7 pic.twitter.com/Gb1SS1hj2Q

— Desmos.com (@Desmos) December 13, 2019

The second is the newest one dealing with systems of equations. It starts with the simple idea of finding points on a single line and then moves to finding points on multiple lines but with limited numbers of chances, but with the context of a laser beam to "shoot" the points. So the idea would be that finding intersection points would be the way to go. One thing I like is the constant suggestion to do work on a separate piece of paper.
Curriculum Tags: MPM2D, MFM2P
https://teacher.desmos.com/activitybuilder/custom/5df166d1fa83ee79c328d37d

It's New Activity Monday at the Desmos Activity Factory!

📈🌩️ LINE ZAPPER 🌩️📈

Don't just solve for the intersection of lines – also ZAP 'em. https://t.co/PEc1jq1mom pic.twitter.com/xUxwGeY29L

— Desmos.com (@Desmos) December 16, 2019

Resource Links
If you are looking for a structure to help you move your teaching forward then you might consider the 3-Part framework developed by @MrOrrGeek and @MathletePearce. In this detailed post they go over the history of how they came to their current model (including some of the hurdles they've overcome. You can read the whole post here or download the whole thing (at the bottom of the post).
Curriculum Tags: All
https://makemathmoments.com/framework/


Video Links
Using Cosine law to check the angle of parking lines
Curriculum Tags: MPM2D, MBF3C, MCF3M, MCR3U, MAP4C
https://www.youtube.com/watch?v=0rxghexCKj8

Here is an interesting way to solve quadratic equations that uses the symmetry of the solutions (compared to the vertices) from @PoShenLo
Curriculum Tags:
Curriculum Tags: MPM2D, MBF3C, MCF3M, MCR3U, MAP4C
https://www.youtube.com/watch?v=ZBalWWHYFQc

One of the best illusions from this year. Thanks to @KMarkPet
Curriculum Tags: All
https://www.youtube.com/watch?v=HC0GGkNZPgs

Last week I posted one of the learn Desmos videos on the beginnings of the graphing calculator. This week, the webinar is on using Desmos Activities
Curriculum Tags: All
https://www.youtube.com/watch?v=rvrzSIY-GbU

Image Links
Some practical application of systems of equations
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/joshdeis/status/1207760178348642304

When am I ever going to need this?...when you need to know when your Snap score on Snapchat will pass your boyfriends score he had a head start of several years and 86,000 points. #relevantmathematics @ddmeyer pic.twitter.com/BswnmL4QHm

— Josh Deis (@joshdeis) December 19, 2019

What a cool way to mix art with your TI-84s
Curriculum Tags: All
https://twitter.com/SPFurman17/status/1207454340966998016

A student approached me a few weeks ago about painting the covers on my TI84s. She said it helps her destress. I am a @Desmos math gal all the way, but her work has made the TIs a lot more fun to look at. My students LOVE seeing each installment...#iteachmath #mtbos pic.twitter.com/W8QKHOclCr

— Sarah Furman (@SPFurman17) December 19, 2019

Math Links for Week Ending Dec. 13th, 2019

Featured Links
I have been listening to the audiobook from @StevenStrogatz's new book Infinite Powers about the history of Calculus. There are some great stories in there but one good site that I didn't know existed was mentioned. It turns out that many of Newton's hand written notebooks have been scanned in and are available for free for anyone to see. Check them out.
Curriculum Tags: All
http://cudl.lib.cam.ac.uk/collections/newton/1



Resource Links
Here's a really simple challenge you could give your students (regardless of whether you use the context of zip codes or not).
Curriculum Tags: Gr7, Gr8
https://twitter.com/DonFraser9/status/1204879660326236161

Hey America ! Do you have a five digit zip code ? Why not have your students use the five digits of a zip code and the order of operations to create the numbers from 1 to 10 (or more) #iteachmath @MathletePearce @Mathgarden #mtbos @davidpetro314 @MatthewOldridge

— Don Fraser (@DonFraser9) December 11, 2019

Too many to mention here but check out @MathequalsLove's post on Christmas related math activities. Check them all out.
Curriculum Tags: All
https://mathequalslove.blogspot.com/2019/12/must-share-math-y-christmas-ideas.html

Video Links
Are you looking to learn the basics about using the Desmos Graphing Calculator? Then check out this webinar hosted by @ddmeyer
Curriculum Tags: All
https://youtu.be/mbya2DBubN8

I made this video on how to divide decimals by using relational rods. I used the Mathies app but it could certainly be done with the real ones too.
Curriculum Tags: Gr7
https://www.youtube.com/watch?v=HrKssNl8Qz8

Image Links
It's always good when the picture of the data tells the story for you. Could health care be important, hmmm.
Curriculum Tags: MDM4U, Gr7, Gr8
https://twitter.com/ddmeyer/status/1205243017675735041

Show me a graph that says it all for you. Here's mine. #iteachmath https://t.co/IIwaDOdTFW pic.twitter.com/yjQHNQ90jZ

— Dan Meyer (@ddmeyer) December 12, 2019