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An Albatross, Hole is One, and an Eagle

March4

New Zealand golfer Amelia Garvey has pulled off a remarkable feat in a US tournament, becoming the first professional to ever record an albatross, a hole-in-one and an eagle on three separate holes of a round. Competing in the final round of the Royal St. Cloud Women’s Championship on the NXXT Tour, Garvey shot a final-round […]

How Gold is Created

February29

Thanks to the James Webb Space Telescope, scientists have been able to witness firsthand how gold is created in our universe. A scientific paper published last week in Nature documented a collision between two ultradense neutron stars nearly a year ago. The paper noted that the explosion, referred to as a kilonova, was the biggest […]

Public Servants in NZ Government

February3

In New Zealand there has been much debate about reducing the number of public servants – those people employed across a range of agencies. To help define this group, here is a unique visual representation. Graphs, used well, have the power to define and explain, and mathematicians often use them in this way. You can […]

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A Greek Island Full of Geometric Wonders

January14

A Greek island is a Geometric wonderland. Check out this inspiring video from the BBC:

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Puzzle Time

December22

What is the largest number between 0 and 1 million that does not contain the letter ‘n’? [answer in post support]

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Favorite Number

December12
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PISA Scores – Top 10

December6

The 2022 results are out for the OECD’s Programme for International Student Assessment (PISA) tests of reading, maths and science. Here are the top ten (full result available here): You can test yourself on some of the math questions here.

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The Question Every Student Got Wrong

December5

Here is the infamous SAT question that every student got wrong. Before we post the solution, what is your guess? [Answer, with explanation video link, is in Post Support]

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Fibonacci Sequence

October30

The Fibonacci Sequence is the series of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, … The next number is found by adding up the two previous numbers. It is quite remarkable that this sequence is often found in nature, such a in the number of petals on daisies, etc: It can […]

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10 Math Movies with Jordan Ellenberg

October29

Now for a little fun—Jordan Ellenberg (see previous post) comments on the Mathematics of some popular “Math Movies.” You might enjoy his take on these too.

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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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