Edmonton, Alberta
Joined June 2015
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Last chance to register for the Canadian Math Kangaroo contest on March 19, 2023! Deadline is February 26 at mathkangaroo.ca. Questions? Email [email protected]
The contest is available in both English and French, in-person and online, for student in Canada. Special conditions apply for the online participation.
Training classes are available.
Register at mathkangaroo.ca/.
A thread of the first 2 weeks in the 2022 #mathadvent from @CMKContest
(a 12-tweet🚂polar express🚂of math challenges)
Days 1 and 2:
xitter.cf/CMKContest/status/1598…
Let us start a #mathadvent! Day 1
🍃🌲
Tell me, on this first of December:
What is this digit that I remember?
When added to 6 or divided by 3
It changes, but it doesn't cease to be
A positive digit.
☃️🏂
Day 14, feeling adventurous with a small animation: can you picture the solid gemstone?
xitter.cf/CMKContest/status/1603…
On day 14 of the #mathadvent, more geometry!
Six-sided figure in my hand
It's one face of a solid gem
Lights out, I'm trying to understand
Gem's facets, ₐₜ least how many of them?
You can find the rest of the 25 puzzles in the thread below:
xitter.cf/CMKContest/status/1607…
Here is a compilation of the second part of our Math Advent Calendar 2022. You can find all tweets under the #mathadvent hashtag
Day 15, factoring and number theory:
xitter.cf/CMKContest/status/1603…
Math Kangaroo retweeted
Si vous effectuez le produit de quatre nombres entiers consécutifs et que vous ajoutez 1, vous obtenez un carré parfait.
Exemple: 4 × 5 × 6 × 7 + 1 = 841 = 29²
Math Kangaroo retweeted
Le nombre premier 1111114111144441142411444411114111111 (qui forme un palindrome) peut être disposé en étoile à 6 branches. Si vous concaténez le nombre de chiffres par ligne (1, 2, 7, 6, 5, 6, 7, 2, 1), vous obtenez aussi un nombre premier (qui est aussi un palindrome).
Here is a compilation of the second part of our Math Advent Calendar 2022. You can find all tweets under the #mathadvent hashtag
Day 15, factoring and number theory:
xitter.cf/CMKContest/status/1603…
Day 15 of #mathadvent brings a tanka:
The largest digit.
Check if your number can be
divided by 𝖎𝖙:
add up the digits, again
ask if 𝖎𝖙's the sum's factor.
Day 24, algebra and numbers:
xitter.cf/CMKContest/status/1606…
Day 24 of #mathadvent
Just 2 more, just 2 more!
What's 20% of a score?
A score is the English word for twenty:
20% of it's this many.
Day 25, 3D geometry and factoring, was a retelling of a beautiful problem from the 2003 Math Kangaroo contest, grade 7-8.
(It was another tough one, but you can try factors and find the answer with ease, or draw a picture!)
xitter.cf/CMKContest/status/1607…
Day 25 (final day) of #mathadvent:
42 sugar cubes packed in one box,
Its bottom's length + width is 9 sugar-cube-sides.
Measured in sugar cubes, please work out the box's
sugar-cube height?
Merry Christmas to all who mark it! Find more math puzzles at mathkangaroo.ca/samples/en
Day 25 (final day) of #mathadvent:
42 sugar cubes packed in one box,
Its bottom's length + width is 9 sugar-cube-sides.
Measured in sugar cubes, please work out the box's
sugar-cube height?
Merry Christmas to all who mark it! Find more math puzzles at mathkangaroo.ca/samples/en
(For example, today's puzzle is a retelling of a 2003 grade 7-8 contest question: can you spot the original version? mathkangaroo.ca/samples/2003…)
🎄🔔Hark how the bells 🔔🎄
Sweet silver bells
All seem to say
Throw cares away
Happy #ChristmasEve to all who celebrate!
There’s loads of connections between maths and bellringing 🤓
Instead of tunes, ringers memorise sequences of changes - permutations where each bell can only swap with the one immediately before or after. In the video above, 11 bells move with the 12th always ringing last.
ALT The changes of a plain course of Stedman Cinques written out in numbers, with a blue line drawn through the treble’s path.