Friday, December 15, 2017

Math Links for Week Ending Dec. 15th, 2017

A new site from the Ministry of Ontario's @mathconnects is Math Path Ontario. This site has many videos and other resources connecting Ontario math courses with careers. You (or your students) can either choose their course pathway and it will show careers that it will lead to or they can choose the career and it will show the proper course pathway. Plus once you click on the career, you will get a video connecting it to math.
Curriculum Tags: All
http://www.mathpathontario.ca/

A new resource from @mathletepearce called mathisvisual.com  combines some concepts in number sense starting with counting and currently ending with adding and subtracting integers. And all done visually. I am sure there will be more to come but take a look at what is there so far.
Curriculum Tags: Gr7, Gr8, MAT1L, MAT2L
http://mathisvisual.com/

Thanks to @MSBJacobs for pointing out this site. It's for Chalk Dust Magazine which is "A Magazine for the Mathematically Curious". Many great articles and puzzles. And if you are quick you can enter the current Christmas based puzzle for a chance to win a copy of The Indisputable Existence of Santa Claus by Hannah Fry and Thomas Oléron Evans
Curriculum Tags: All
http://chalkdustmagazine.com/

If you are dealing with metric prefixes or imperial metric conversions then this episode might be useful. It starts with the story of losing a Mars probe due to mixing up imperial and metric measurements and then ends with discussion of some of the larger metric prefixes. Listen here
Curriculum Tags: Gr7, Gr8, MPM2P, MBF3C
http://www.bbc.co.uk/programmes/p05jgh5y


It's never good to here that students lack confindence in math but it appears that this is more prevalent with girls.
Curriculum Tags: All
https://globalnews.ca/news/3909143/confidence-in-math-has-become-a-major-problem-for-girls-in-school/
I like when @ddmeyer releases his yearly talk video. In this one the theme is that "math is power, not punishment". That is, we need to do a better job of convincing students that it is worthwhile to know about math. There are some nice examples and even some Ontario teachers make a brief appearance (@MrOrr_Geek, @AlexOverwijk and @Wheeler_Laura). Definitely worth a watch.
Curriculum Tags: All
http://blog.mrmeyer.com/2017/presentation-math-is-power-not-punishment/


You can never have enough info about Pascal's triangle, if you ask me. Thanks to @KMarkPet for this one
Curriculum Tags: MDM4U
https://ed.ted.com/lessons/the-mathematical-secrets-of-pascal-s-triangle-wajdi-mohamed-ratemi

Some nice interactives from @dpscher on arrays and a nice video to go along with it from @JamesTanton giving a reason to use arrays in the first place (including for algebra)
Curriclum Tags: All
http://www.sineofthetimes.org/multiplication-arrays/


I always like @jessicahagy's Indexed site for helping students interpret points on a graph.
Curriculum Tags: MPM1D, MFM1P
http://thisisindexed.com/2017/11/stupid-kills/

Some data on the cost of running Christmas lights
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://www.washingtonpost.com/news/wonk/wp/2017/11/24/what-your-christmas-lights-will-do-to-your-electricity-bill/


Friday, December 8, 2017

Math Links for Week Ending Dec 8th, 2017

This past summer I had the pleasure of going to my first Twitter Math Camp. As it turns out becoming a participant at TMC is quite the feat. It regularly fills up quickly. And one way that you can get a spot is to be one of the presenters. They are always looking for new presenters and one of them could be you. And to help convince you I suggest you read recent blog posts from @samjshah or @marybourassa. They are great places to start if you are thinking of presenting but need a push or some ideas. And then when you are ready, fill in the Google form to submit your proposal.
Curriculum Tags: All
http://tmathc.com/
http://marybourassa.blogspot.ca/2017/12/tmc-18.html
https://samjshah.com/2017/12/02/submit-a-proposal-for-tmc18-you-yes-you/
https://docs.google.com/forms/d/e/1FAIpQLSciiWCWqPjNRBrxDgPtUqF5vBS4j3dOvMhDBQ3wrcsAIIq6LQ/viewform?usp=sf_link

Are you looking for almost 30 Desmos activities from gr7-12? Then take a look at @MrOrr_Geek's spreadsheet compiling all of his activities. He's indicated for which grade each relates to, the topic and a brief description. Check them out.
Curriculum Tags: All
https://docs.google.com/spreadsheets/d/1IuxL3fqUPWvm4CEEh6lBeSL0YHk7_WM30E9NwL-_LlM/edit#gid=0

I have seen this Shell Centre activity before but I really like this Desmos update from @pejorgens. It's a great way to start kids on interpreting points on a scatter plot. Thanks to @mrOrr_Geek for pointing this one out.
Curriculum Tags: Gr8, MPM1D, MFM1P, MDM4U, MAP4C
https://teacher.desmos.com/activitybuilder/custom/599ae3856ea0c23e58022e50





I like this problem that @FawnpNguyen highlighted on her blog recently:
There are 75 olives, 40% of which are green. I eat some of the green olives until 10% of the olives that remain are green. How many green olives did I eat?
Specifically I like the way she used a visual solution rather than an algebraic solution. Take a look
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
http://fawnnguyen.com/green-olives/


If you are talking about scale diagrams with your kids then maybe start by showing what @colin_furze created by starting with a scale model
Curriculum Tags: Gr7, Gr8, MFM1P
https://www.youtube.com/watch?v=sTvY9Llqtms


We've been doing a lot of work in our school board on building thinking classrooms. So this post from @BenOrlin is quite timely. It's hard to get your kids to think and he suggest three strategies to make it happen. Check the post out for the full story.
Curriculum Tags: All
https://mathwithbaddrawings.com/2017/12/06/the-three-barriers-to-deep-thinking-in-school/



Saturday, December 2, 2017

Math Links for Week Ending Dec. 1st, 2017

In his latest post @MrOrrGeek peels back the curtain a bit to tell us about two things: "Igniting his moves" with, among other things,references to " The Five Practices of Productive Mathematics Discussion" and "Fuel Sense Making" where he talks about how to roll with what students do. And he does it all with a nice simple microwave context.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
http://mrorr-isageek.com/fuel-sense-making-black-box-defrost/



Although this post is a year old, I just saw it for the first time this week. Here @Anniekperkins takes the idea that mathematicians aren't just white dudes to new heights. She drops the following challenge: "Take 10-15 minutes a week to research (read Wikipedia, that’s all you need) a not-old-dead-white-dude mathematician, and then take 5 minutes in class to tell your students about them. " And then she's done most of the work for you. Lists and links of tonnes of mathematicians of all types. Thanks to @ddmeyer for this one.
Curriculum Tags: All
https://arbitrarilyclose.com/2016/08/21/the-mathematicians-project-mathematicians-are-not-just-white-dudes/


We have been creating these continuums of math problems on different topics at different grade levels. We have found that students actually really like working on them as practice. We have literally heard them say "Am I sick? Because I think this is fun". In this case, the topic is solving rational equations and inequalities.
Curriculum Tags: MHF4U
http://engaging-math.blogspot.ca/2017/11/rational-functions-continuum.html



With Christmas coming up, why not do some math with a fun survey about the best dancers in the Charlie Brown Christmas Special. But beyond that I think you could have kids do the calculations on all the different possible pairings there could be in the matchups to connect to combinatorics.
Curriculum Tags: MDM4U 
https://fivethirtyeight.com/features/the-a-charlie-brown-christmas-special-dancers-you-most-want-to-party-with/

Understanding and dealing with large numbers is a problem for humans. So to help out, Scientific American has some resources on dealing with connecting with big numbers to help determine whether they are, in fact, big.
Curriculum Tags: All
https://www.scientificamerican.com/article/millions-billions-trillions-how-to-make-sense-of-numbers-in-the-news/

In a recent podcast from More or Less they look at the possible reason that albums are getting longer. The short answer is - more tracks means more potential clicks and higher chart placing. There is some interesting info about Spotify. I'm thinking you could have some conversations about rate using the information here about things like how many clicks is equated to one "purchase" - 1500 plays equates to one record sale. Listen at the link below
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
http://www.bbc.co.uk/programmes/p05mpr59

 On the Podcast, My Favourite Theorem they interview mathematicians and ask what their favourite theorem is. Though the theorems are not always k-12 centric, on this recent episode you find out how this mathematician connects Pythagorean Theorem with his Navajo identity.
Curriculum Tags: Gr8, MPM1D, MFM1P, MPM2D, MFM2P
https://blogs.scientificamerican.com/roots-of-unity/henry-fowlers-favorite-theorem/

I've mentioned John Urschel before. He's the NFL player and MIT PHD math student who quit pro football once the data started coming out on the connection to brain damage and the NFL. Here's a recent story about why he chose math over football.
Curriculum Tags: All
https://www.si.com/nfl/2017/11/21/john-urschel-nfl-ravens-mit-mathematics

An interesting article on whether math is truly innate in humans
Curriculum Tags: All
https://aeon.co/essays/why-do-humans-have-numbers-are-they-cultural-or-innate

I have been meaning to try the Mathies Notepad App for a while. So I made this (long) video on dividing fractions using a numberline to do so.
Curriculum Tags: Gr7, Gr8
https://www.youtube.com/watch?v=oD9qSCNUFjs

Do you want to have a bit of fun with students and formulas. Try this:
Curriculum Tags: Gr7, Gr8
https://xkcd.com/1923/


Friday, November 24, 2017

Math Links for Week Ending Nov. 24, 2017

When teachers create activities to share, that's where the Internet is great. I have said that a few times on this blog and I especially like when those activities are for senior math courses. Sometimes we forget that senior students need to have activities too. In this activity, @MaryBourassa has done the leg work for creating logarithmic functions by creating cards of several functions. That's the hard work. The easy bit is giving each function to groups of students and having them determine their function's equation.
Curriculum Tags: MHF4U
http://marybourassa.blogspot.ca/2017/11/log-graphs.html

A nice little fraction activity from @mathletepearce which could be used from gr1-8. Reminds me of the Fraction Talks website.
Curriculum Tags: Gr7, Gr8
https://tapintoteenminds.com/3act-math/cover-it-up/






Some more adventures in a gradeless class from @MsHLye. This time at teacher/student conferences.
Curriculum Tags: All
http://teachinginspirations.blogspot.ca/2017/11/reflections-on-midterm-conferences-in.html

An interesting post from @ddmeyer which is essentially a call to arms in revamping the curriculum. The idea is that currently its designed with very few in mind:
"And just as the economic 1% creates systems that preserve its status – policies like the mortgage interest deduction for homeowners, discriminatory lending policies, and lower taxes on capital gains than income – through our action or inaction we create systems that preserve our status as the knowers and doers of mathematics."
Check out the whole post below
Curriculum Tags: All
http://blog.mrmeyer.com/2017/dismantling-the-privilege-of-the-mathematical-1/

Just a quick image from @wheeler_laura on what should be happening in each class
Curriculum Tags: All
https://twitter.com/wheeler_laura/status/934080070586580992

Who knew the change in acceleration was called the jerk? Well you do now, thanks to @ViHartViHart
Curriculum Tags: MCV4U
https://www.youtube.com/watch?v=LkLBVMgsSHQ

The return of the hexaflexigon. This time actual instructions.
Curriculum Tags: All
https://www.youtube.com/watch?v=Svq2Kscmmwc


A great image for adding fractions
Curriculum Tags: Gr7, Gr8
https://twitter.com/nomad_penguin/status/933903851580661761

A nice WODB from @MSBJacobs for Advanced Functions
Curriculum Tags: MHF4U
https://twitter.com/msbjacobs/status/934100008386772993




Friday, November 17, 2017

Math Links for Week Ending Nov. 17th, 2017

As some of you know, Desmos now does Geometry now. That's great but my preferred mode of operation with Desmos is Activity Builder. I guess that is in the works and I got some advanced access to a beta version. So this is my first Geometry activity. It's an investigation into properties of Quadrilaterals (by looking at diagonals). It walks students through some of the properties and then lets them summarize with a table. In the end, they get some randomly generated practice to test their skills. Keep in mind it's in Beta so there may be times when it doesn't work right now. Check it out and the rest of my Desmos activities at the link below and you can see my brief explanation at the video below.
Curriculum Tags: Gr8
http://engaging-math.blogspot.ca/p/desmos-activities_10.html


So many resources for operations with integers from  @G_BRGMN. From adding & subtracting to order of operations, it's all here. Some paper and pencil and some from Desmos. I particularly like the One Incorrect worksheet. Check them all out.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://countjoy12.wordpress.com/2017/11/05/integers/

Last week when I was in Ottawa seeing @PGLiljedahl and the topic of student's taking notes came up. I was sitting next to @Wheeler_Laura and she was talking about her Course Packs that she uses for student notes. Each is about 10 pages long and each page covers one overall expectation. Student's use these to generate their notes for the three courses she has done already. And on a related note, check out her summary of the OAME Leadership conference.
Curriculum Tags: MPM1D, MFM1P, MPM2D, MFM2P
https://mslwheeler.wordpress.com/2017/11/11/course-packs-for-the-thinkingclassroom/


Want to mix Pi and poems, why not have students write poems where the number of letters in each successive word matches the digits of Pi. Here's a none poetic example "Can I have a small container of coffee?" and a great Google Slides template from @EricCurts. Thanks to @LLClement for pointing this one out.
Curriculum Tags: All
http://www.controlaltachieve.com/2017/09/pi-poems.html


Ontario Mathies is looking for some feedback on their new Algebra Tiles App. You can help by following the link in the Tweet below. That will take you to an online form with questions about the app and there is a link in the form to the current beta version.
Curriculum Tags: Gr7, Gr8, MPM1D, MFM1P
https://twitter.com/rossisen/status/931204160585953280


And speaking of Mathies Apps, there are some new updates on the Notepad app for using number lines and "hops". I am starting to develop some ideas about dividing fractions on a number line and I think these will help.
Curriculum Tags: Gr7, Gr8
http://mathies.ca/apps.php?referringPage=Learning%20Tools#Nn0

Some teachers shaking things up by teaching math with art. Well done. Thanks to @KMarkPet for this one.
Curriculum: All
http://www.cbc.ca/news/canada/london/london-ontario-combined-art-math-course-1.4395354

If you haven't already seen @MFAnnie's Ignite talk on Noticing and Wondering, what are you waiting for? And if you still, after seeing it, aren't sure why you want kids to notice and wonder then you might want to check out @mathletepearce's post on why he wants kids to notice and wonder.
Curriculum Tags: All
https://tapintoteenminds.com/notice-wonder/

You can have your kids practice working with powers and have them look for primes at the same time from @Numberphile.
Curriculum Tags: Gr8, MPM1D, MFM1P
https://www.youtube.com/watch?v=fcVjitaM3LY

So cool, using a pile of matchboxes that can learn to play Tic-Tac-Toe from @standupmaths
Curriculum Tags: All
https://www.youtube.com/watch?v=R9c-_neaxeU


I can't get enough of WODB. This one for equivalent fractions from @Mr_Stadel
Curriculum Tags: Gr7, Gr8
https://twitter.com/mr_stadel/status/930550152200253440