Katherina Macartney
@KatMacHWDSB
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Proud mom. Eager to learn. HWDSB Math Facilitator.
Hamilton, Ontario
Joined July 2014
The importance of conceptual understanding so vital . Make sure fractions added or subtracted are same size unit .
Hot take but I always see videos of the butterfly method go viral but I would *never* teach this method and here's why.
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My collection of 30+ digital manipulatives. All free and simple to use. https://t.co/iMLBnINZmm
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GR 3 PD on Area —wanted to incorporate Pentominoes (an undervalued manip). Placed blank post-its around P for people to show their thinking. Practicing composing/ decomposing shape to find A, x , skip counting, spatial sense to get pieces to fit.
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First time ever! An eclipse of the Moon seen from Toronto, and the Earth seen from the Moon. (images: Andrew Yee and @Firefly_Space)
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Using concept circles to create orthographic drawings... LOTS of math skills ..VISUALIZING is critical for thinking in ALL areas of the curriculum!!
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Using concept circles to describe graphs of a polynomial function. Great way to support the understanding of math vocabulary. You (or students) can also provide the descriptions and invite students to create the graph! What other descriptions might they add to this one?
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Grade 3 classrooms were cold yesterday so we all moved to the library to work on literacy &math centres. My group and I were learning how to represent and add decimal tenths using ten frames (pretending they were whole chocolate bars ). @MemorialHWDSB
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This progression video from @gfletchy explains multiplication from 2nd to 5th grades and applies to middle and high school teachers too (think: distributive property, polynomial multiplication, etc.). https://t.co/NUtLiZPaTV
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We are learning to add with trading - using $10 and $1 & making connections to base ten trades and the standard algorithm. @HWDSBmath @CathyWeverHWDSB
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Happy #FibonacciDay! Today, we celebrate the sequence where each number is the sum of the previous two. From sunflower spirals to cornucopias, Fibonacci patterns shape our world.
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For Indigenous Education Month, @TDSB staff from local Math, Science, and Technology (MST) programs experienced how learning about Cherokee numerals can help to enrich Grade 9 destreamed math classes while also addressing curricular expectations. Much gratitude to @notknownotice
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Number of the Day. It's been around for a few years now, but still one of the most popular starters on the site. https://t.co/C6lm6r7asa
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There are many many overlaps of behaviours between sensory processing issues, ADHD, and anxiety. This is because they are all part of regulation.
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Love this!
Simone Biles is now the most decorated US Olympics gymnast, so here is a thread of her as functions y = x
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This would be a great poster to hang up in school halls!
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