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problem
2 out of 3
Molecular Sequencer
14 to 18
2 out of 3
Investigate the molecular masses in this sequence of molecules and deduce which molecule has been analysed in the mass spectrometer.
article
Continued Fractions I
An article introducing continued fractions with some simple puzzles for the reader.
problem
2 out of 3
World of Tan 6 - Junk
7 to 11
2 out of 3
Can you fit the tangram pieces into the silhouette of the junk?
problem
2 out of 3
Königsberg
11 to 14
2 out of 3
Can you cross each of the seven bridges that join the north and south of the river to the two islands, once and once only, without retracing your steps?
problem
1 out of 3
Mach Attack
16 to 18
1 out of 3
Have you got the Mach knack? Discover the mathematics behind exceeding the sound barrier.
problem
2 out of 3
Move a Match
7 to 11
2 out of 3
How can you arrange these 10 matches in four piles so that when you move one match from three of the piles into the fourth, you end up with the same arrangement?
problem
1 out of 3
Triangle Shapes
5 to 11
1 out of 3
This practical problem challenges you to create shapes and patterns with two different types of triangle. You could even try overlapping them.