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Posts tagged with classroom

Fun, Adventure and Discovery

February14

A classroom of attentive students focused on the teacher, waving a whiteboard marker over equations and graphs? No! Mathematics is about adventure and discovery, and the power of groups to solve problems together – a bit like an escape room for the mind! In fact, I think we need to attract more adventurous math teachers […]

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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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Why a Math Classroom is such a funny place!

May25

Did you know that some Math teachers try too hard! I know, because that was me! When you’re teaching math, you are up against some tough stereotypes and perceptions—you have more standards to address than you have time for, and you have to find a way to connect material to students in a meaningful way […]

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Value of Zero to the Power of Zero?

April30

Eddie Woo takes his students on a cool math adventure with their calculators to find out the value of zero to the power of zero!

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The Good Chalk Talk on Mathematics

May6

Amazing that having the right chalk can make a mathematician work better and feel happier. After all, when has Mathematics been about ‘feeling’? Actually, it is ALL about feeling – about feeling confident, about feeling like taking risk, about feeling good when solving problems and feeling great at a mathematical revelation while sitting at the […]

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Crazy Classroom Mathematics

October24
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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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