## Friday, July 26, 2019

### Math Links for Week Ending Jul. 26th, 2019

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
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

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

Who doesn't love 3D interactive mathematical art?
Curriculum Tags: All
Some nice data about Internet usage around the world
Curriculum Tags: Gr7, Gr8

## Friday, July 19, 2019

### Math Links for Week Ending Jul. 19th, 2019

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
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.

That is totally fun? How do you think a student would describe what was happening?
Curriculum Tags: All
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

## Saturday, July 13, 2019

### Math Links for Week Ending Jul. 12th, 2019

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/

I like this Open Middle problem from @MrJohnRowe on Areas
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P

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

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
What a great way to make fractions auditory.
Curriculum Tags: Gr7, Gr8

Great visual puzzle
Curriculum Tags: All

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

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

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

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