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Archive for October, 2017

Do I have to be good at Spatial Reasoning to be good at Math?

October31

“There is much, much more to mathematics than “spatial reasoning“: I am a research mathematician with some kind of international reputation, but my inherent spatial reasoning abilities are no better than average. I bought a bookcase a few months ago, but delayed assembling it and seem to have lost the instructions: without them, I think […]

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From Poetry to Mathematics

October29

“When you teach, you do something useful. When you do research, most days you don’t.” This comment, by June Huh, explains his passion to teach others and probably explains why your own teacher loves their job too! Huh is a member of the rarefied Institute for Advanced Study, which lies adjacent to Princeton’s campus. As […]

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Fast way to learn your tables

October28

In every math classroom there are some students who have struggled or are struggling to learn their multiplication tables. Even with phones handy, printed tables on card, and calculators the ability to quickly rehash basic multiplication facts fast is a great asset. Knowing your tables is, in our humble opinion, a confidence cornerstone for all […]

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The Matrix was a mashup of…sushi!

October27

Yes, you probably read about it here last, but 20 years ago (ask your parents) the film The Matrix featured scrolling green ‘code’ which turned out to simply be sushi recipes! If you read Japanese and look closely you’ll be able to see it’s a jumble of characters: hiragana, katakana, and kanji. The production designer, […]

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The 10958 Problem or Fun with Integers

October26

The 10,958 Problem from NumberPhile

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Crazy Classroom Mathematics

October24
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Test your rounding skills – only 10% pass this test!

October24

click on the image to play – there are 10 questions in total

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A Brilliant Young Mind

October14

Maths at the Movies – A Brilliant Young Mind ~A socially awkward teenage math prodigy finds new confidence and new friendships when he lands a spot on the British squad at the International Mathematics Olympiad~

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Paradox – an absurd truth

October13

By definition, a Paradox is an absurd statement which may prove to be true. The amazingly impossible designs of the artist Escher are excellent examples and his work is shown in the sculpture above. Mathematics is one large system of logic – a kind of universal language that transcends individual civilizations and specific languages. As […]

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Trick Math Question Upsets Beethoven

October13

Frustrated maths fans were recently seething at a puzzling question. The trick question about Beethoven’s 9th Symphony was trending on Twitter after an alarmed person posted it. “An orchestra of 120 players takes 40 minutes to play Beethoven’s 9th symphony,” the question goes. “How long would it take for 60 players to play the symphony?” […]

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« Older Entries

Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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