@mac4math profile picture
Ian Macpherson @mac4math

Husband, father, math lover, retired Nunavut teacher, retired secondary curriculum leader #ugmath #MathChatON #MTBoS #ITeachMath he/him/his

Joined May 2009
  • Tweets 4,467
  • Following 207
  • Followers 230
105 Photos and videos
Ian Macpherson retweeted
Cheri DiNovo
@CheriDiNovo
5 Feb 2024
Parent’s kids who are inclusive and accepting of their children’s gender identity don’t need a law to force educators to betray their childrens’ confidence because THEIR KIDS KNOW THEY’RE LOVED as they are and THEIR KIDS TELL THEIR PARENTS
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RT @71_dlt: I don't give a flying fuck where @JustinTrudeau went for his well deserved vacation with his family. What I do care about, is t…
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Ian Macpherson retweeted
Michael Jacobs@msbjacobs
16 Jan 2024
Each square is the product of the two squares immediately below it. a, b, c and d are natural numbers such that each of the four squares in the bottom row are irrational numbers. Find values for a, b, c and d that will give a whole number in the top square.
An arrangement of squares with 4 on the bottom row, three on the row above that, two on the row above that and one square on the top. The squares in the bottom row have these terms: √a, √b, √c, √d.

ALT An arrangement of squares with 4 on the bottom row, three on the row above that, two on the row above that and one square on the top. The squares in the bottom row have these terms: √a, √b, √c, √d.

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RT @canadianpoli: Retweet if you remember that the Liberals had Canadians backs when COVID struck. #IStandWithTrudeau #VoteLiberal2025 #Ch…
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Ian Macpherson retweeted
BKBelton 🇨🇦@bk_belton
15 Nov 2023
🇨🇦WEDNESDAY MEMO🇨🇦 Canada is not broken. #IStandWithTrudeau🇨🇦
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RT @canadianpoli: Retweet if you would like to see Pierre Poilievre get voted out of office. #CanadiansAgainstPoilievre t.co/ekbV1q…
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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
22 Mar 2023
Start your day with this #yohaku. Fill in cells with 9 different factors of 132 to get totals shown in each row/column.
Use 9 different factors of 132 in a 3 by 3 grid. The numbers in the top row add to 56. The numbers in the middle row add to 42. The numbers in the bottom row add to 92. The numbers in the left column add to 56. The numbers in the middle column add to 54. The numbers in the right column add to 80.

ALT Use 9 different factors of 132 in a 3 by 3 grid. The numbers in the top row add to 56. The numbers in the middle row add to 42. The numbers in the bottom row add to 92. The numbers in the left column add to 56. The numbers in the middle column add to 54. The numbers in the right column add to 80.

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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
17 Mar 2023
Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 450 to get totals shown in each row/column AND shaded cells contain square numbers.
Use 16 different factors of 450 in a 4 by 4 grid. The numbers in the top row add to 76. The numbers in the second row add to 319. The numbers in the third row add to 89. The numbers in the bottom row add to 125. The numbers in the left column add to 64. The numbers in the second column add to 17. The numbers in the third column add to 355. The numbers in the right column add to 173. The central four cells contain square numbers.

ALT Use 16 different factors of 450 in a 4 by 4 grid. The numbers in the top row add to 76. The numbers in the second row add to 319. The numbers in the third row add to 89. The numbers in the bottom row add to 125. The numbers in the left column add to 64. The numbers in the second column add to 17. The numbers in the third column add to 355. The numbers in the right column add to 173. The central four cells contain square numbers.

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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
7 Mar 2023
Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca
Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 210. The numbers in the middle row multiply to 396. The numbers in the bottom row multiply to 12. The numbers in the left column multiply to 112. The numbers in the middle column multiply to 27. The numbers in the right column multiply to 330.

ALT Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 210. The numbers in the middle row multiply to 396. The numbers in the bottom row multiply to 12. The numbers in the left column multiply to 112. The numbers in the middle column multiply to 27. The numbers in the right column multiply to 330.

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Ian Macpherson retweeted
Wayne Gates@Wayne_Gates
24 Feb 2023
Thirty-seven years ago today, Tommy Douglas passed away. I am asking you to share this message, to remind Doug Ford that he was voted the Greatest Canadian because he spent his life fighting for publicly-funded, publicly-delivered health care. Let’s honour Tommy’s legacy.
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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
24 Feb 2023
Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 2925 to get totals shown in each row/column.
Use 16 different factors of 2925 in a 4 by 4 grid. The numbers in the top row add to 48. The numbers in the second row add to 562. The numbers in the third row add to 710. The numbers in the bottom row add to 1280. The numbers in the left column add to 1254. The numbers in the second column add to 1148. The numbers in the third column add to 150. The numbers in the right column add to 48.

ALT Use 16 different factors of 2925 in a 4 by 4 grid. The numbers in the top row add to 48. The numbers in the second row add to 562. The numbers in the third row add to 710. The numbers in the bottom row add to 1280. The numbers in the left column add to 1254. The numbers in the second column add to 1148. The numbers in the third column add to 150. The numbers in the right column add to 48.

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Ian Macpherson retweeted
BrooklynDad_Defiant!☮️
@mmpadellan
23 Feb 2023
OOPS! Looks like Fox News allowed a bit of truth to slip into their coverage of the train derailment story in East Palestine, OH — they're blaming trump!!!🤯 Be a real shame if everyone retweeted this.

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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
20 Feb 2023
Start your week with this #yohaku. Fill in cells with 9 different factors of 416 to get totals shown in each row/column.
Use 9 different factors of 416 in a 3 by 3 grid. The numbers in the top row add to 73. The numbers in the middle row add to 31. The numbers in the bottom row add to 50. The numbers in the left column add to 30. The numbers in the middle column add to 110. The numbers in the right column add to 14.

ALT Use 9 different factors of 416 in a 3 by 3 grid. The numbers in the top row add to 73. The numbers in the middle row add to 31. The numbers in the bottom row add to 50. The numbers in the left column add to 30. The numbers in the middle column add to 110. The numbers in the right column add to 14.

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Ian Macpherson retweeted
Scribulatora@Scribulatora
19 Feb 2023
Dear conservatives, More than 65% of Canadians are “left leaning”. What you think is a “left leaning” press and “left leaning” institutions are actually the inevitable and appropriate manifestions of democracy. We are headed “left”. On purpose. Sorry to ruin your day.
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All of Canada 🇨🇦 should be protesting privatized healthcare. Retweet if you agree!
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Ian Macpherson retweeted
Mark Hamill
@MarkHamill
19 Feb 2023
#GunLawsSaveLives
This tweet is unavailable
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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
15 Feb 2023
Start your day with this #yohaku. Fill in cells with 9 different prime numbers to get totals shown in each row/column.
Use 9 different prime numbers in a 3 by 3 grid. The numbers in the top row add to 65. The numbers in the middle row add to 24. The numbers in the bottom row add to 23. The numbers in the left column add to 35. The numbers in the middle column add to 16. The numbers in the right column add to 61.

ALT Use 9 different prime numbers in a 3 by 3 grid. The numbers in the top row add to 65. The numbers in the middle row add to 24. The numbers in the bottom row add to 23. The numbers in the left column add to 35. The numbers in the middle column add to 16. The numbers in the right column add to 61.

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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
14 Feb 2023
Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca
Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 156. The numbers in the middle row multiply to 63. The numbers in the bottom row multiply to 60. The numbers in the left column multiply to 70. The numbers in the middle column multiply to 162. The numbers in the right column multiply to 52.

ALT Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 156. The numbers in the middle row multiply to 63. The numbers in the bottom row multiply to 60. The numbers in the left column multiply to 70. The numbers in the middle column multiply to 162. The numbers in the right column multiply to 52.

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Ian Macpherson retweeted
Yohaku@YohakuPuzzle
13 Feb 2023
Start your week with this #yohaku. Fill in cells with 9 different factors of 60 to get totals shown in each row/column.
Use 9 different factors of 60 in a 3 by 3 grid. The numbers in the top row add to 51. The numbers in the middle row add to 33. The numbers in the bottom row add to 69. The numbers in the left column add to 54. The numbers in the middle column add to 32. The numbers in the right column add to 67.

ALT Use 9 different factors of 60 in a 3 by 3 grid. The numbers in the top row add to 51. The numbers in the middle row add to 33. The numbers in the bottom row add to 69. The numbers in the left column add to 54. The numbers in the middle column add to 32. The numbers in the right column add to 67.

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