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



Friday, July 5, 2019

Math Links for Week Ending July 5th, 2019

Featured Links
Being able to estimate is a great skill for students to have. And so why not estimate angles and distances in a fun way. In this activity @sergeballif does an awesome job of it with Degree Golf. Students start on hole one and estimate the angle to shoot and the distance to the hole. The number of shots is kept track of and then once they do all the holes, there is a Challenge creator for students to create their own hole for the rest of the class to try.
Curriculum Tags: Gr7, Gr8


Resource Links
If you like Pi and Python coding then you might like this blog post about mixing those things. The code is there and the different types of Pi calculations. And it has one of my favourite infinite series methods. So have some fun. Thanks to @yaboimackp for this one.
Curriculum Tags: MCR3U

I really like this assessment idea from @a_mcsquared. The premiss is this (I am simplifying): You give an assignment and the day before it is due you make the answers with full solutions available and then ask students to grade their own assignments. Who hasn't given out an assignment (or test), posted full solutions after grading to see very few kids actually look at them. In this case, having students do the grading themselves will likely give them better insight into what went wrong because they have done the work. Check out the full explanation here.
Curriculum Tags: All
http://audrey-mcsquared.blogspot.com/2019/06/changing-follow-up-into-rise-up.html

And speaking more on assessment, @BCphysics did a little experiment where they posted a series of marks and asked people to holistically and more formally determine a grade. What were the results? That in most cases, the holistic grade was just fine. I would go even further to say that the idea that we can somehow calculate any grade and be confident of it's accuracy is a fallacy. That is, if you calculate a grade of 83.25% (because you can), I would argue that that precision is misleading. In fact, I would argue that you are probably only confident to +/- 5%. Read more here.
Curriculum Tags: All
http://physicsoflearning.com/edblog/holistic-vs-calculated-grading/


Opinion Links
In this post @MathGarden talks about the idea that math is not about getting the answer. In fact, he says: "That mathematics is only worth doing if you can be correct. That mathematics can only be appreciated by being proficient. That mathematical expertise is obtainable in this narrow definition of mathematics. All of this is false." Read more at the link below. Thanks to @KMarkPet for this one.
Curriculum Tags: All
https://medium.com/@sunilsingh_42118/mathematics-in-the-age-of-brene-brown-6f0bc4a179c2


Video Links
I thought this video on the Fourier Series from @3blue1brown was awesome. It does get into the weeds a bit but the visuals are great for talking about adding vectors, adding functions, limits, calculus, transformations and more high end stuff. It's a bit long but I think it would be cool to have students watch it and talk about all the parts that relate to the math they are doing. And honestly, I love that a 25 min long video on Fourier series can get over 600k views in a few days.
Curriculum Tags: MHF4U, MCV4U
https://www.youtube.com/watch?v=r6sGWTCMz2k


And for a slightly simpler version, you might like this one from @smartereveryday
Curriculum Tags: MHF4U, MCV4U
https://www.youtube.com/watch?v=ds0cmAV-Yek

Image Links
who doesn't like fun with an Apollonian gasket where the numbers show 1/r, where r is a given circle’s radius.
Curriculum Tags: Gr 8
https://www.americanscientist.org/article/a-tisket-a-tasket-an-apollonian-gasket