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Posts tagged with iPad

Words began with numbers!

October2

“Much like today’s tablets, writing at length on the world’s first tablets was a pain in the neck. Fire-hardened clay tablets were really only convenient for scribbles and straight lines, just enough for simple accounting with graphic symbols and tick marks. “Words, in a sense, began with numbers” says Peter Watson in his superb book […]

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Cool Math presentation apps for iPad

May6
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iPad in Mathematics…

April12

Apple CEO Tim Cook, in 2012, made the following comment; “The reason that we [lowered the iPad 2 price] was because…there was a buyer that really wanted the best product, but needed it to be a little less expensive. I believe that we saw that. I think it did help our sales. I think it’s […]

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Euclid demos the earliest iPad…

April22

Yes, here it appears that Euclid (or a look alike) is showing off his new yellow iPad? Well before your iPhone and digital SLR the only way to capture events was to paint or sketch them. This is an extract from Raphael’s School of Athens painting and features the mathematician Euclid (famous for his Geometry […]

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Apple’s New iPad, but is this a Histogram?

March8

These remarkable sales figures came in yesterday – showing Apple’s amazing sales figures with the launch of the iPhone and iPad. The new iPad3 was released today. But, I am wondering, is this graph a Histogram? Before we answer that question (I’m pleased you asked that) what features of this graph are “wrong”? 1. Poor […]

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The New Textbooks

February24

While teaching in the USA I was dumbfounded by the size and weight of the average textbook – and the strain they out on the back of a high school student. There were regular talkback shows where doctors expressed their dismay at the number of teenagers who had back issues directly related to them carrying […]

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Best iPhone app for Maths – Like Having a Geek in your Pocket

February4

Which iPhone/iPad app is the  best for Mathematics? WolframAlpha have a really powerful and useful Math app (link here) for most levels of applications (basic maths to advanced calculus, physics, stats and other topics). Highly reviewed and graphical displays for functions, maps, etc. Well worth a download? Let this blog know how you get on […]

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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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