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Level 1 - One cog catching odd and even numbers
Level 2 - One cog catching square, prime, cube and triangular numbers
Level 3 - A level 1 cog and a level 2 cog
Level 4 - Two level 2 cogs
Level 5 - Two level 2 cogs and a level 1 cog
An interactive flashcard web application that helps IB Mathematics AA students master exam notation. So far this activity has been accessed 17 times and it is ready for you to enjoy!
Rotate the cogs to catch the numbers in the correct sections. This can be done by clicking the clockwise and anticlockwise buttons above or by pressing the indicated number keys on the keyboard or number pad.
When you are ready to begin press the Start button.
You can earn a Transum trophy for catching 30 numbers correctly. There are five different levels arranged in increasing order of difficulty.
Move the pieces of the tower from one place to another in the minimum number of moves. This puzzle was invented in 1883 but is still as captivating today as it was all those years ago.
The number sequences used in this activity are as follows:
Odd: 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29 ...
Even: 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30 ...
Square: 1,4,9,16,25,36,49,64,81,100 ...
Cube: 1,8,27,64 ...
Triangular: 1,3,6,10,15,21,28,36,45,55,66,78,91...
Prime: 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97 ...
