Friday, August 23, 2019

Math Links for Week Ending Aug. 22rd, 2019

Featured Links
Words matter. Here are some suggestions from @MrsForrest dealing with different ways that you can avoid labelling kids as "high" or "low". Thanks to @BerkleyEverett for pointing this out.
Curriculum Tags: All
http://showyourthinkingmath.blogspot.com/2018/05/the-low-kids-and-high-kids.html

Resource Links
Some information about women in mathematics who have have had female students who have become mathematicians and the chains of mentors and students that came of that.
Curriculum Tags: All
https://twitter.com/evelynjlamb/status/1160932947031015425

I like this dynamic tessellation from @MathHombre. It reminds me of this one that I did in Desmos and WebSketchpad.
Curriculum Tags: Gr7
https://twitter.com/mathhombre/status/1162392153001213959
Video & Audio Links
Listen to @ProfKeithDevlin talk about how the needs of math students have changed and how we should change the way we teach and what we teach to match.
Curriculum Tags: All
https://www.wvxu.org/post/npr-math-guy-keith-devlin-new-math-skills-we-need-future


Working with ratios? Try a ratio table
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/PamHarrisConsu1/status/1161442867895840768
Here is a really interesting construction with a surprising result.
Curriculum Tags: MPM1D, MFM1P
https://twitter.com/dynamic_math/status/1162349898160910336
Wow, make sure you check out all of the comments for the different dynamic versions of this.
Curriculum Tags: All
https://twitter.com/MathCeyhun/status/1162015492644704258
Image Links
A fraction question for you
Curriculum Tags: Gr7, Gr8
https://twitter.com/jamestanton/status/1160179112360603649

Have your students test their algebraic skills with this problem connected to the quadratic formula
Curriculum Tags: MCR3U
https://twitter.com/jamestanton/status/1161350279637491716
Some cool cross sections of a cube. And if you want the high res Illustrator version, check out the comments and below is the dynamic "water" version from @shonk
Curriculum Tags: All
https://twitter.com/Trianglemancsd/status/1161464188348313600
Here is the dynamic version
Curriculum Tags: All
https://flotsam.sellingwaves.com/post/90811439361/if-you-fill-a-cube-with-water-the-shapes-the

Who doesn't like a good Calculus joke. Thanks to Mark Naber for this one
Curriculum Tags: MCV4U




Friday, August 16, 2019

Math Links for Week Ending Aug. 16th, 2019

Featured Links
I like these two spacial reasoning puzzles that @mathequalslove has created templates for. Check them out and how she uses them at the links below:
Curriculum Tags: All
https://mathequalslove.blogspot.com/2019/07/square-pi-puzzle.html
https://mathequalslove.blogspot.com/2019/07/1-4-5-square-challenge.html


Resource Links
Are you a Websketchpad user? Then you might want to check out some of the new features which includes function notation tools.
Curriculum Tags: All
http://www.sineofthetimes.org/catching-up-with-new-web-sketchpad-functionality/


Video Links
Ok so this video starts off with some pretty tame graphs but the last few are just crazy. Either way, have your kids try some of these complex relationships.
Curriculum Tags: MCR3U
https://www.youtube.com/watch?v=pAMgUB51XZA

Man I need a 3D printer
Curriculum Tags: All
https://twitter.com/ThamKhaiMeng/status/1157962976474873861
Here's a nice visual representation for a series.
Curriculum Tags: MCR3U
https://twitter.com/MagicPi2/status/1159849203553767425

Image Links
Interesting burger visualization
Curriculum Tags: MDM4U
https://flowingdata.com/2019/08/06/best-burger-ranks/


Friday, August 9, 2019

Math Links for Week Ending Aug. 9th, 2019

Featured Links
I really like the idea of starting the year of with students by finding out about their relationship with math. Here is a few possible questions you can ask them.
Curriculum Tags: All
https://twitter.com/howie_hua/status/1158860573469106176
Resource Links
A new activity from Desmos is here to help students describe various transformations using informal language. Try it out
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5d4380d4fc08cd0a943e099d/
OK it's back again, that order of operations problem. But this time @StevenStrogatz has done a great job of telling us why there is an issue in the first place. It's the first really clear reference and explanation of the idea of the effects of implicit multiplication. I have been describing this for a couple of years about this problem but this is a great one stop shopping place for a clean concise explanation.
Curriculum Tags: All
https://www.nytimes.com/2019/08/05/science/math-equation-pemdas-bodmas.html?smid=nytcore-ios-share


Opinion Links
And if you are tired of those order of operations questions then you might be ready for @StevenStrogatz's more interesting essays on mathematics.
Curriculum Tags: All
https://twitter.com/stevenstrogatz/status/1158382357151399941
Video Links
Man, @dynamic_math does a great job of maximizing the potential of Geogebra's 3D engine
Curriculum Tags: MPM1D, MFM1P, MPM2D, MFM2P
https://twitter.com/dynamic_math/status/1159173087969124352
Image Links
Some great comparisons from @MonaChalabi based on this week's mass shootings. Make sure you scroll through all the images.
Curriculum Tags: MDM4U, MAP4C
https://www.instagram.com/p/B01POJ7Fwai/


View this post on Instagram

SWIPE TO SEE HOW THE MEDIA DISTORTS REALITY >>> The study where I got these numbers had this conclusion: “๐•‹๐•™๐•š๐•ค ๐•จ๐• ๐•ฃ๐•œ ๐•—๐•š๐•Ÿ๐••๐•ค ๐•ฅ๐•™๐•– ๐•ž๐•–๐••๐•š๐•’ ๐•š๐•ค ๐••๐•š๐•ค๐•ฅ๐• ๐•ฃ๐•ฅ๐•š๐•Ÿ๐•˜ ๐•ฅ๐•™๐•– ๐•ฃ๐•–๐•’๐•๐•š๐•ฅ๐•ช ๐• ๐•— ๐•ž๐•’๐•ค๐•ค ๐•ก๐•ฆ๐•“๐•๐•š๐•” ๐•ค๐•™๐• ๐• ๐•ฅ๐•š๐•Ÿ๐•˜๐•ค… ๐•‹๐•™๐•– ๐•š๐•ž๐•ก๐•๐•š๐•”๐•’๐•ฅ๐•š๐• ๐•Ÿ๐•ค ๐• ๐•— ๐•ฅ๐•™๐•š๐•ค ๐•ก๐• ๐•ฅ๐•–๐•Ÿ๐•ฅ๐•š๐•’๐• ๐•ž๐• ๐•ฃ๐•’๐• ๐•ก๐•’๐•Ÿ๐•š๐•” ๐•ž๐•’๐•ช ๐•“๐•– ๐•š๐•ž๐•ก๐•’๐•”๐•ฅ๐•š๐•Ÿ๐•˜ ๐•ก๐• ๐•๐•š๐•”๐•ช ๐•ฃ๐•–๐•ค๐•ก๐• ๐•Ÿ๐•ค๐•–๐•ค ๐•ฅ๐•  ๐•ฅ๐•™๐•– ๐•ก๐•™๐•–๐•Ÿ๐• ๐•ž๐•–๐•Ÿ๐• ๐•Ÿ... ๐•‹๐•™๐•– ๐•ฃ๐•–๐•ค๐•ฆ๐•๐•ฅ๐•š๐•Ÿ๐•˜ “๐•ค๐•ช๐•ž๐•“๐• ๐•๐•š๐•” ๐•๐•–๐•˜๐•š๐•ค๐•๐•’๐•ฅ๐•š๐• ๐•Ÿ” ๐•ฅ๐•™๐•’๐•ฅ ๐•ฅ๐•’๐•ฃ๐•˜๐•–๐•ฅ๐•ค ๐•ฅ๐•™๐•–๐•ค๐•– ๐•™๐•š๐•˜๐•™๐•๐•ช ๐•ก๐•ฆ๐•“๐•๐•š๐•”๐•š๐•ค๐•–๐•• ๐•ฃ๐•’๐•ฃ๐•– ๐•š๐•Ÿ๐•”๐•š๐••๐•–๐•Ÿ๐•ฅ๐•ค ๐•š๐•ค ๐•ค๐•ฆ๐•“๐•ค๐•–๐•ข๐•ฆ๐•–๐•Ÿ๐•ฅ๐•๐•ช ๐•—๐•’๐•š๐•๐•š๐•Ÿ๐•˜ ๐•ฅ๐•  ๐•’๐••๐••๐•ฃ๐•–๐•ค๐•ค ๐•ฅ๐•™๐•– ๐•๐•’๐•ฃ๐•˜๐•–๐•ฃ ๐•ž๐•’๐•ค๐•ค ๐•ก๐•ฆ๐•“๐•๐•š๐•” ๐•ค๐•™๐• ๐• ๐•ฅ๐•š๐•Ÿ๐•˜ ๐•ก๐•ฃ๐• ๐•“๐•๐•–๐•ž: ๐•ก๐•–๐•ฃ๐•ก๐•–๐•ฅ๐•ฃ๐•’๐•ฅ๐•–๐•• ๐•“๐•ช ๐•ก๐•ฃ๐•–๐••๐• ๐•ž๐•š๐•Ÿ๐•’๐•Ÿ๐•ฅ๐•๐•ช ๐•จ๐•™๐•š๐•ฅ๐•–, ๐•ž๐•š๐••๐••๐•๐•–-๐•’๐•˜๐•–๐•• ๐• ๐•—๐•—๐•–๐•Ÿ๐••๐•–๐•ฃ๐•ค, ๐•ฆ๐•ค๐•š๐•Ÿ๐•˜ ๐•™๐•’๐•Ÿ๐••๐•˜๐•ฆ๐•Ÿ๐•ค ๐•š๐•Ÿ ๐•’ ๐•จ๐• ๐•ฃ๐•œ๐•ก๐•๐•’๐•”๐•– ๐•ค๐•–๐•ฅ๐•ฅ๐•š๐•Ÿ๐•˜๐•ค." Sources: Mother Jones database 1982-2019 and the International Journal of Comparative and Applied Criminal Justice, 2019
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Friday, August 2, 2019

Math Links for Week Ending Aug. 2nd, 2019

Featured Links
I came across this Tweet from @ddmeyer and kind of dismissed it but later on I saw a reply in the thread that said this:"You're gonna say something this year – it might feel innocuous and forgettable – that one of your students will be recounting with his voice cracking TWENTY YEARS LATER." That got me curious and looked at the thread. It was in response to something a principal (who was part of the audience) said: "One principal told me afterwards about the time in 7th grade that he felt belittled by his math teacher and gave up on math.". No doubt, that we have all done this at one time or another. Makes you really think about the power and influence we have and how we can affect the most vulnerable students so easily. Read the whole thread below:
Curriculum Tags: All
https://twitter.com/ddmeyer/status/1157353070814216192
And along a slightly different line, @CarlOliwitter has started a new hashtag (and slow chat) #MakeMathJust to talk about social justice and equity issues in mathematics. Check out the conversation at the link below
Curriculum Tags: All
https://twitter.com/hashtag/makemathjust?src=hashtag_click&f=live

Resource Links
I probably should have posted this last week but you might still have some time to see some of these webinars from so many good speakers in this year's Building Math Minds Summit. you can see them from the link below and if you are too late, at least you can get something out of the back channel hashtag #BuildMathMinds19
Curriculum Tags: All
https://mathematicallyminded.lpages.co/vms-speaker-page-day-1/



Well, I guess it's that time. And by that, I mean time for another one of those "viral" math problems. This time it's another one of those "BEDMAS/PEMDAS" debates dealing with implied multiplication: 8/2(2+2). Now, full disclosure, I would have been one arguing for the answer 16 but now I am firmly in the 1 camp. Of course, by standard order of operation rules, the answer would be 16 but like most things in school, we don't give the whole picture and it turns out that there is a rule about implied multiplication that gives it precedence. You can read a thread I posted about this issue a couple of years ago here where, among other things, you can see an explicit mention of this rule in a calculator manual. That being said, I do like @StevenStrogatz's take on it which is more to talk about the importance of notation than to give the correct answer. Thanks to @JPJacula for pointing this one out.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://www.huffingtonpost.ca/entry/math-problem-twitter-bedmas-pemdas_ca_5d420367e4b0acb57fc6b0fd

Some cool ideas answering the question "What math teaching strategies works best?" from @mashupmath. With answers from a bunch of educators (including some Ontario teachers @mathletepearce, @mathgarden, @BrianAspinal and @MarkChubb3). Thanks to @BartVanslack for pointing this out
Curriculum Tags: All
https://mashupmath.com/blog/math-teaching-strategies-featuring-jo-boaler

Image Links
I thought this graph was pretty telling and probably something every teacher should be aware of. It was in response to @ddmeyer's Tweets from above.
Curriculum Tags: All
https://twitter.com/MathPhan/status/1157382411375861761



Friday, July 26, 2019

Math Links for Week Ending Jul. 26th, 2019

Featured Links
If you haven't purchased your #mathgals shirt (or even if you have) then you may be interested on who the women are on each shirt. Thanks to @SamJShah2 for pointing this out.
Curriculum Tags: All
https://twitter.com/samjshah2/status/1153131349458505729
Resource Links
I'm a big fan of card sorts and so here is a nice and simple Desmos Card sort for special quadrilaterals from @Giohio
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/5d39d1334d9d49026d198d11
It turns out some of the math that got us to the moon is use to help the logistics of why most planes land on time.
Curriculum Tags: All
https://www.cnn.com/2019/07/24/world/apollo-moon-math-airplanes-scn-trnd/index.html



This is pretty cool. The idea is that you give students a context for a graph and then ask them to draw what they think the graph will look like before showing them. This TheyDrawIt! authoring tool lets you create the situations. Give it a go
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4U
https://medium.com/multiple-views-visualization-research-explained/theydrawit-an-authoring-tool-for-belief-driven-visualization-b3267a001480

Some number facts up to 10googol (and beyond) in two blog posts. Thanks to @YaBoiMack for these two.
Curriculum Tags: All
https://waitbutwhy.com/2014/11/from-1-to-1000000.html
https://waitbutwhy.com/2014/11/1000000-grahams-number.html


Opinion Links
I have always liked the work of @taylorpeter77 and so I am quite interested to see what comes of this curriculum that he is developing that focusses on creativity and wonder in mathematics. Read about it here.
Curriculum Tags: All
https://phys.org/news/2019-07-mathematics-creativity-fun.html


Video Links
Who doesn't love 3D interactive mathematical art?
Curriculum Tags: All
https://twitter.com/creapills/status/1147163440399757312
Image Links
Some nice data about Internet usage around the world
Curriculum Tags: Gr7, Gr8
https://twitter.com/simongerman600/status/1153834938799710209




Friday, July 19, 2019

Math Links for Week Ending Jul. 19th, 2019

Featured Links
Who knew there was such a thing as a golygon? I'm sure you could have students do so much with this sort of thing. Making their own, investigating things like area and perimeter. That sort of thing.
Curriculum Tags: Gr7, Gr8
https://twitter.com/fermatslibrary/status/1151834005756698624
Resource Links
Last week I had a link to a recent Trump Campaign survey about the Democrats and how it was so biased. It turns out that this is pretty normal (maybe that is not surprising). Here is one on the media that starts out almost normal but then it quickly makes a turn. Thanks to @Esping_Math for this one.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C
https://www.donaldjtrump.com/landing/mainstream-media-accountability-survey

When you introduce trig ratios, it's important for kids to practice. This way they get comfortable with what they mean and how to use the. This open middle activity from @And02B has been updated by  @mathequalslove and is a nice way for them to do that. The activity isn't new but what she did was make it physical with printable cards. You might want to change some of the cards if you want to keep to the primary trig ratios but it still has a lot of potential. Check out the link for all the downloads.
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C.
https://mathequalslove.blogspot.com/2019/06/trig-ratio-open-middle-task-with.html

Video Links
That is totally fun? How do you think a student would describe what was happening?
Curriculum Tags: All
https://twitter.com/Gelada/status/1150482149004517377
Image Links
I don't think there is any age that it's not appropriate to ask "How many....?" "How did you count them?". Being comfortable with numbers is the first step in being numerate.
Curriculum Tags: All
https://twitter.com/Simon_Gregg/status/1151822603683803136


Saturday, July 13, 2019

Math Links for Week Ending Jul. 12th, 2019

Featured Links
Who is the world's most interesting mathematician? That's what the Great Internet Math Off is trying to find out. Go to the link below to find out who is up for matches this year (and vote as well). Two people who frequently appear on this blog are @SamJShah2 and @MathGarden. Look for their matches and vote for them too.
Curriculum Tags: All
https://aperiodical.com/2019/06/announcing-the-big-internet-math-off-2019/

Resource Links
I like this Open Middle problem from @MrJohnRowe on Areas
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/MrJohnRowe/status/1148107154076782593

This is crazy that it's real. It's the Official Trump Vs Democrats poll. It's the perfect example of how to write biased questions. And the poll is still up so you know it's on purpose. You could certainly have a great discussion with any data management students. But just in case they actually look at the validity of the poll and take it down, @Abel_Jennifer has taken screen shots of the whole thing so you will always have it.
Curriculum Tags: Gr7, Gr8, MDM4U, MAP4C
https://www.donaldjtrump.com/landing/2020-trump-vs-dem-poll

Are you looking for your next math shirt? Here's one started by @BerkleyEverett to help remind students that they are not bad at math.
Curriculum Tags: All
https://twitter.com/BerkeleyEverett/status/1149756485091512321


Video Links
Here's a great "real world" problem that could be connected to estimation or even volume of rectangular prisms
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/ddmeyer/status/1148370640119857152
What a great way to make fractions auditory.
Curriculum Tags: Gr7, Gr8
https://twitter.com/MathsXer/status/1149167080786104320


Image Links
Great visual puzzle
Curriculum Tags: All
https://twitter.com/jamestanton/status/1149895725251092480

Here is a nice graphic organizer for quadrilaterals
Curriculum Tags: Gr7 Gr8
https://www.instagram.com/p/Bu7B2nihte2/?utm_source=ig_web_button_share_sheet