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Archive for September, 2012

Scale in Math

September27

The Hubble post (below) uses scale in order for us to get a sense of place and size of the image taken in relation to the moon. Scale is important in the Mathematics of Life – we use scale everyday in our house plans, models boats and planes, etc: Source and more info here 

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Time and Space – Hubble exposes deep space

September27

A stunning new composite photograph from the Hubble Space Telescope, made up of more than 2,000 images shot by multiple cameras over the past 10 years and combined in what amounts to a 23-day time exposure, shows some 5,500 galaxies in tiny field of view, including some dating back to just 450 million years after […]

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Woz Was Here and No.5 is Alive!

September21

Yes, dear blog readers – the one and only Steve Wozniak of Apple fame was just a few minutes down the road from my classroom – lined up to buy his new iPhone 5. Without Mathematics it would just be an iPhone…! Go number 5!! (Note: No, I don’t own an iPhone but do love […]

Do we live in a parallel universe?

September21
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No touching allowed

September19

Parallel lines are lines in the same plane that never touch. Like railway tracks they just keep the same distance apart: Which leads to some interesting facts about angles…read more here. So, are the railway tracks on the right in this picture parallel or not? This question generated quite a bit of class discussion. Of […]

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Gift idea for your Math Teacher…

September18
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How do you measure up?

September13

Yes, a number of students (perhaps even you?) have difficulty measuring angles accurately. First, you need a protractor, something like this: You place the centre of the protractor (labelled G above) on the vertex (place where the angle is formed). You move the protractor around until the 0 degree mark is at the start of […]

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Prime Numbers are in their prime!

September13

A Japanese mathematician claims to have the proof for the ABC conjecture, a statement about the relationship between prime numbers that has been called the most important unsolved problem in number theory. If Shinichi Mochizuki’s 500-page proof stands up to scrutiny, mathematicians say it will represent one of the most astounding achievements of mathematics of […]

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Double Stem and Leaf

September10

Double stem and leaf plots are used to compare two distributions side-by-side. This type of double stem and leaf plot contains three columns, each separated by a vertical line. The center column contains the stems. Example  – Making a double stem and leaf plot for the data gathered by students doing traffic counts at different times […]

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Grab a Graph

September9

A graph is a visual story for mathematicians. You choose the one that best illustrates the story you are telling with the data you have collected. For example, this stem and leaf is a cool way to show the exam scores for a class. Turn your computer (or your head) sideways (to the left) and […]

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