Showing posts with label Gr7Pob. Show all posts
Showing posts with label Gr7Pob. Show all posts

Friday, June 30, 2017

Math Links for Week Ending June 30th, 2015

I'm a sucker for posts about assessment. So when @MrOrr_Geek posted this story about assessment, I was in. I love the premiss because it's about changing the paradigm about assessment in his classes. And not to give it all away but I loved the tag line at the end "Assessment is power not punishment". That is, most kids fear assessment but he is trying to build a culture in his classes where assessment empowers students. Even if you don't use @Freshgrade, the underlying principles are pretty intriguing. Watch below to find out how.
Curriculum Tags: All
http://mrorr-isageek.com/conalls-assessment-story/

I have been sitting on this activity for a while. I actually made it last December but just got around to posting it now. We have started to develop a number of activities using a continuum model for student practice where the practice problems become incrementally more difficult as students progress (at their own pace). In this case we've tackled trig identities. Take a look.
Curriculum Tags: MCR3U
http://engaging-math.blogspot.ca/2017/06/trig-identities-continuum.html



I like card matching activities because they get students to do the math but in a way that is much more palatable for students. In this case @marybourassa (adapted from @pamjwilson)  has students match up different representations of linear functions (points, slope, equations, graphs) and students have to match them. We did a similar activity with functions in context here but this one is good for analytic linear functions.
Curriculum Tags: MPM1D, MFM2P
http://marybourassa.blogspot.ca/2017/06/linear-matching.html


There is no shortage of questions you can ask about the Tim Horton's Roll Up the Rim contest. This time @mathletepearce has turned it into a 3Act Task on Probability.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://tapintoteenminds.com/3act-math/roll-up-the-rim-150/



Some evidence as to why you can't just look at the summary statistics for data sets without looking at the visual representations. In the spirit of the Anscomb's Quartet (my post here), here is a number of data sets that have the same summary but different graphs. Don't miss the Datasaurus too.
Curriculum Tags: MDM4U
https://www.autodeskresearch.com/publications/samestats


With all of the accusations of "Fake News" I thought this article on how to spot fake statistics was quite topical. It's from last year but still quite relevant.
Curriculum Tags: MDM4U
https://www.theguardian.com/science/2016/jul/17/politicians-dodgy-statistics-tricks-guide


This is a fight we have all the time. That is, the notion that students come into your class thinking that they are not a "math person" or the societal idea that it's even OK to claim you are not a math person (yet they would never say "I don't read"). Thanks to @michelecooper for this one.
Curriculum Tags: All
https://www.thespec.com/news-story/7389739-the-math-problem-i-m-not-a-math-person-/

And along the same lines is this TED talk from @MonaChalabi on Three ways to spot a bad statistic.
Curriculum Tags: MDM4U
https://www.ted.com/talks/mona_chalabi_3_ways_to_spot_a_bad_statistic

A nice visual guide on thinking probabilistically from @juliagalef
Curriculum Tags: MDM4U
https://www.youtube.com/watch?v=BrK7X_XlGB8


Sometimes examples of math are right under our noses. In this case, it's an example of a dilatation that is seen every time the Twitter app opens. Get the video or animated gif at the folder below.
Curriculum Tags: Gr7, Gr8
https://drive.google.com/drive/folders/0B9algQOOR_bkMmZBXzV4ZmtmZnc


And we might as well start the summer with a math joke about math jokes. Very Meta.
Curriculum Tags: All
https://www.facebook.com/mathtricksorg/photos/a.123610140919.104738.123606280919/10154712750735920/?type=3&theater



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Friday, May 13, 2016

Math Links for Week Ending May 13th, 2016

The Data and Story Library (DASL) is an awesome repository of data sets that can be used to teach statistics. For a while it was offline and looking for a new home. It has found one thanks to @DataDesk7. Go to the site and search by statistical method (eg correlation) or subject (Eg health) for a bunch of text files with raw data in them ripe for the picking. I have used this as a source for problems many times. Here is my favourite data set.
Curriculum Tags: MBF3C, MAP4C, MDM4U
http://found-data.blogspot.ca/2016/05/the-data-and-story-library-dasl.html

I like unintended uses of Google Docs, and last year I shared @Joe_Sisco's Interacive Wordwalls using Google Drawings. In this post @ryan_psmith uses the same technique to create interactive algebra tile Google Drawings. Thanks to @wheeler_laura for pointing this one out
Curriculum Tags: MPM1D, MFM1P, MPM2P
http://rypsmith.blogspot.ca/2015/12/manipulatives-in-math.html


Here is a great example of conditional probability and why the problem of false positives can be hard to understand. Based on the math, it turns out that the probability of dying in a car crash is higher than an extinction level event happening to our planet. The math is correct but the thing that people forget about things like this is that there is one Earth and one "experiment" where as for car accidents there are thousands of experiments happening everyday.
Curriculum Tags: MDM4U
http://fortune.com/2016/05/04/extinction-car-crash/

I like this short little activity from @mathycathy that mixes animals, linear patterns and Desmos. Students are given an image of three "critters" that change based on a linear growing pattern. Then students discuss what might happen next, graph the relationship then guess what the 100th term might look like. Nice and simple.
Curriculum Tags: Gr7, Gr8
https://teacher.desmos.com/activitybuilder/custom/572...78a97f

The connection of math that gambling has is often poo-pooed by educators (for fear of possibly starting an addiciton - I mean seriously, we have to call dice "number cubes"). In this post, @AlexBellos gives us reason to love gambling and why it has helped math.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U
https://www.theguardian.com/science/alexs-adventures-in-numberland/2016/may/05/seven-lucky-ways-that-gambling-changed-maths

I just found out about this blog from Michael Lieff. Here they look at data visualizations and point out unique representations, good uses of data and issues. Its been around for a couple of years but on the homepage there are some suggestions of popular posts to look at.
Curriculum Tags: MDM4U
http://junkcharts.typepad.com/






A couple of more posts from last week's OAME conference (for more check out last week's post). I was sorry I missed all of @marybourassa's sessions but I guilted her into posting her slide decks (she had many). She did a neat panel discussion with (@alexoverwijk, @mrorr_geek, @sheriwalker72 and @BDMclaurin on the benefits of spiralling the curriculum, a session on her WODB site, an awesome session on her grade 10 applied & academic classes (her day by day posts on her blog are great) and finally ended up doing an Ignite session on asking 150,000 questions. Check her decks out here, there really is something for everyone here.
Curriculum Tags: All
http://marybourassa.blogspot.ca/2016/05/oame-2016.html

I mentioned one session from @paulynecass last week and found that also did one with @igniteincite on the Effective Use of Manipulatives. Looks like it was a session packed with stuff.
Curriculum Tags: All
http://bit.ly/JrIntManipulatives

Yup, so us Canadians luv our Census. So much that we shut down the website.
Curriculum Tags: Gr7, Gr8, MBF3C, MDM4U, MAP4C
https://www.buzzfeed.com/craigsilverman/census-so-lit?utm_term=.ydXzzAXapG#.gkOkkpQ25A

Sad but true, this professor gets pulled off of a plane because his mathematical scribbles were mistaken as an act of terrorism. He was wielding weapons of math abstraction.
Curriculum Tags: All
https://www.washingtonpost.com/news/rampage/wp/2016/05/07/ivy-league-economist-interrogated-for-doing-math-on-american-airlines-flight/

If you need to introduce a friend to the Desmos Graphing calculator then send them to this recording of a intro webinar. Even if you know Desmos, you may find some things you like in the challenges that @mjfenton uses to demonstrate some of the features.
Curriculum Tags: All
https://www.youtube.com/watch?v=5BpKOfq-H58




















I can't wait to see the movie The Man Who Knew Infinity and @standupmaths has some mathematical facts as a companion


Hopefully this isn't your math class
Curriculum Tags: All
https://www.youtube.com/watch?v=XECyt6u_rSY&sns


Finally a practical use of rates. Thanks to @mathletepearce for this one
Curriculum Tags: All
https://www.facebook.com/OntarioProud/photos/a.1693894720888631.1073741828.1693504040927699/1722597111351725/?type=3&theater

Who doesn't like "Fibonachos"?
Curriculum Tags: All
https://twitter.com/SciencePorn/status/729487441019715585
Finally a store that gets it. Thanks to Michael Lieff for this one
Curriculum Tags: All
https://www.facebook.com/MyMathElation/photos/a.615351755257567.1073741828.615338091925600/883568025102604/?type=3&theater

Very cool visualization of the effects of global warming
Curriculum Tags: MDM4U

A fun Venn diagram. Can you figure it out? Thanks to @joe_Sisco for this one
Curriculum Tags: Gr7, Gr8
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