Welcome to H3 Maths

Blog Support for Growing Mathematicians

Mac Mouse Magic for Mathematical Memories

May30

A few of us met the Macintosh when it was launched in 1984, and I can still remember a sample being on trial at my first school. Sitting apologetically in the corner of the main staffroom, it was a rather odd looking, all-in-one computer with a strange device attached called a “mouse”. Perhaps that is why it was in the corner, near the wall? In some ways it was a toy and not really worth taking that seriously, especially when we had TRS80’s to program in the Maths Department. The TRS80’s were for serious Maths! In fact, I recall that the Maths teachers avoided the Macintosh, while the Art teachers flocked to it like fireflies to a colored lantern. I do remember seeing rather elegant looking fonts on the Macintosh but not much that was of use for me as a Mathematics teacher. The Macintosh included the official Guided Tour of Macintosh  – which came as a floppy disk and cassette of synced audio instructions. And to teach users what to do with that weird thing called a mouse, a whole section was devoted to “MOUSING AROUND”. Here is one of the tutorials:
macmouseNowadays, of course, Mac Math users have a great little built in tool called “Grapher”. This is found in the Utilities folder and is a powerful tool for 2D and 3D graphing, and it makes the addition of text a breeze as well:
grapherFor an excellent tutorial on using Grapher, click here.

(H3 disclaimer: H3 has no shares in Apple or any other company, and uses a Windows PC reluctantly during work hours, and a MacBook Pro for writing this blog)

by posted under Uncategorized | Comments Off on Mac Mouse Magic for Mathematical Memories    

Comments are closed.

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)?]

Archives

H3 Viewers



Skip to toolbar