A blog about teaching and learning in a maths classroom.
Saturday, 21 December 2013 | Comments
Happy end of school year (in Australia at least).
Multiplying Coins Trick 21 Dec 2013
It seems like telepathy but, as Rob shows, its a bit of simple logic combined with easy mental arithmetic, but if your audience doesn't know how it's done, it is an impressive trick.
Series Problem - Shapes 21 Dec 2013
Everyone understands a series of numbers or letters, but what is a series of shapes? A series problem involving quadrants in a circle.
Midday Traffic Time Collapsed and Reorganized by Color 21 Dec 2013
The high-tech version of students standing at the front school fence and counting cars by colour. In this new video I took a four minute shot of state highway 163... then removed the time between cars passing and reorganized them according to color. I was curious to see what the city’s car color palette looked like when broken down.
Circle 3 17 Dec 2013 · via Meagan Rodda
The goal of this puzzle is to put three numbers inside each circle so that they add up to 3. To solve the puzzle, click and drag the black numbers to the blank spaces. You cannot move the blue numbers. When the three numbers inside any circle add up to 3, the circle changes colour.
Column strength test 16 Dec 2013
Teaching three-dimensional shapes or geometry? Demonstrate the extraordinary strength of the humble cylinder using ordinary paper and a stack of books. Includes video and teacher notes.
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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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