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Archive for February, 2014

Dynamic Math Worksheets

February26

Math-Aids.Com is a free resource for teachers, parents, students, and home schoolers. The math worksheets are randomly and dynamically generated. This allows you to make an unlimited number of printable math worksheets to your specifications instantly. Well worth a visit.

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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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Getting value from statistical data – future jobs for mathematicians!

February20

In 2009, Hal Varian, Chief Economist at Google and emeritus professor at the University of California, predicted, “I keep saying the sexy job in the next ten years will be statisticians…The ability to take data – to be able to understand it, to process it, to extract value from it, to visualise it, to communicate […]

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If I learn Pi to 1000 places will I be a better mathematician?

February16

This post asks an interesting question. So, as a high school student, I go to the trouble (and it would be some trouble) to learn the value of Pi to 1000 decimal places. Will that make me a better mathematician? NO, according to recent research on how we learn. Check out this article on this […]

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Playing with simple rectangles

February15

As every growing mathematician knows, the area of a rectangle is A = base x height. Yet, simple rectangles can be used to make up some very interesting patterns, as in this interior for a restaurant. Of course, the colors can also be represented mathematically, as in this example from colorcube.com. This website attempts to […]

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Art attracts Mathematicians in Italy

February13

The amazingly beautiful and accessible Duomo in Milan, built over some 4 centuries, was such a compelling Gothic building that it attracted many talented Mathematicians and Scientists – who wanted to study and share in the beauty and power of the Duomo. As the cathedral’s architecture became the powerhouse of intellectual culture in northern Italy, […]

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An ice-cube away from…brrrrrrr…the coldest temperatures

February9

Our daughter found herself trapped in a large freezer once. Fortunately, her cell phone saved her from a slow, agonizing death! Actually, she was doing a promotion at a trade show and the freezer was supposed to have a safety mechanism to prevent the door locking. Just the thought of this incident makes H3 shiver! […]

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A Mathematical Look at a Medieval Cathedral

February7

“If you wish to design and build a cathedral, you’d better know some mathematics. The application of mathematics has been central to the design and execution of art and architecture from the Classical era through the Middle Ages and still today. The renown of the Greek prescriptive sculptural instructions, the Canon of Polykleitos, attests to […]

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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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Free math resources with Wolfram Alpha

February4

Net Texts, the free content management platform for open educational resources(OER) is partnering with Wolfram to provide access to online math practice problems through the Wolfram Problem Generator. This exciting partnership will help classroom learning via a flexible learning space. Note: free sign up is required for access

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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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