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Posts tagged with teaching

Show Your Working

September30

If there is one thing that sticks in my high school mind it was the instruction to “Always show your working” from my math teacher. Even if the answer was wrong, I could gain credit by showing the logical steps to solve a problem. From a teacher’s perspective, the working helps me understand how a […]

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Worthless Words Not Needed for Math Learning

July10

Peter Tavernise from Cisco writes, “What if your biggest challenge in learning math was that you could not understand the words that the teacher used to convey math concepts? That the language in the math book was not your first language? Or that your learning disability involved difficulties with words and reading?” This graph (from the […]

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Rubik Cube – a colourful creation!

September18

The first person to solve a Rubik’s Cube spent a month strugglingto unscramble it. Erno Rubik was born on July 13, 1944, about a month after D-Day, in the basement of a Budapest hospital that had become an air-raid shelter. His father was an engineer who designed aerial gliders. As a boy, Rubik loved to […]

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My Math – the Stats

December16

I am finally retiring – or at least trying to. Here are my stats: 46 years teaching 10 different schools Teaching in 3 different countries 2 Head of Faculty positions 2 attempts to retire 1 school leadership position 1 textbook and 1 novel 1 wife and 3 children So, you might ask, what happens to […]

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Secrets to Top Math Scores in Victoria, Australia

December14

“You have to have talent, and you have to be willing to work hard!” This sums up the high scores achieved recently by students in their state-wide math exams. A recent article highlights the underlying secret to high scores in senior school Mathematics, in the southern state of Victoria, Australia: “In Melbourne’s eastern suburbs, Vermont […]

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Academy ups the Math prerequesite in Oz universities

March17

All year 12 students should be made to study intermediate mathematics if they want to enrol in a science, engineering or commerce degree at university, according to a national report by the Australian Academy of Science (AAS). “This is an absolutely critical issue. We’ve hit a pretty low point,”  said the director of the Australian Mathematical Sciences Institute […]

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New Tools to Explain old Newton Equations

May5

One of history’s great geniuses, Isaac Newton (yes, the mathematician with the curly hair sitting under the apple tree), developed differential equations in the 1600s. But we aren’t all geniuses, so here’s the definition given in Differential Equations for Dummies (caution – this link downloads over 300 pages!) such equations “involve derivatives, which specify how […]

Math is an art and a language for everyday life!

February25

Students and community members gathered Saturday at Grand Valley State University to attend presentations during the annual Math in Action Conference. Charlene Beckmann, a mathematics professor at GVSU, has been the co-chair for the conference since 2007. Beckmann said the university continues to host the event every year because it provides an opportunity for both […]

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Kid struggles with math yet wins prestigious award!

February4

Michael Wallus didn’t take a direct path to winning a presidential Award for Excellence in Mathematics and Science Teaching. “I was not the kid who was good at math,” Wallus, an elementary math coordinator for Minneapolis Public Schools said after his award was announced last week.  “Fractions rolled around and it didn’t make sense to me.” He […]

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Tradition for Addition…

March2

Yes, dear young mathematician, you need to heed Dr Vaughan Jones. He is a Fields Medal winner (like winning a Nobel Peace prize) in Mathematics. He is also a very practical person who has an interest in seeing young people succeed in their math. This article reinforces the need to learn the basics and learn […]

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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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