- Ordinary maps with directions East and North are examples of Math graphs.

- The centre of a map is called the origin (0,0) in Mathematics.

- Moving East 3 km, and North 4 km from a map's centre is the same as going from (0,0) to (3,4) in Math.

- The ordered pair (3,4) has x co-ordinate 3 and y co-ordinate 4 as measured from the origin.

- The order of the numbers in each ordered pair is crucial.

- The x co-ordinate is also called an abscissa, and the y co-ordinate is called an ordinate.

- Your Score Report appears after you have made 8 choices.

- Your Game Score is reduced by the number of butterfly hits.

- To slow the game speed repeat tap/click on the word

- To increase the game speed repeat tap/click on the word Math.

- Speed can also be adjusted with a keyboard's - and + keys.

- Refresh/Reload the web page to restart the game.

- Adjust the sound level of media on your device.

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