Notes on a Triangle

In the window below, you will see part of the National Film Board of Canada's website.

Click on the arrow in the black and white rectangle to watch "Notes on a Triangle".
You can adjust the volume and pause the film using the buttons underneath the screen (you may have to scroll down a little to see them).


How would you describe what happens in the film?

Can you describe what happens in different sections of the film?
eg 1 - 34 seconds and 35 - 45 seconds may provide two natural sections to focus on at the beginning.

What mathematical properties remain constant throughout your chosen clip?

Could a section of the dance be performed by a different shape?
Imagine replacing the triangle with a kite, or a rhombus, or an arrowhead, or ...

How would you cut up your new shape to produce congruent pieces?
Can your new shape(s) still achieve the same movements and symmetries?

If you produce a wall display do send us some photos.

Here is a sheet of equilateral triangles for you to print off and cut out (using coloured paper might be a good idea) if you want to recreate some of the images in the film.