Can you fill in the empty boxes in the grid with the right shape
Someone at the top of a hill sends a message in semaphore to a
friend in the valley. A person in the valley behind also sees the
same message. What is it?
What is the missing symbol? Can you decode this in a similar way?
The Vikings communicated in writing by making simple scratches on
wood or stones called runes. Can you work out how their code works
using the table of the alphabet?
I was looking at the number plate of a car parked outside. Using my special code S208VBJ adds to 65. Can you crack my code and use it to find out what both of these number plates add up to?
Semaphore is a way to signal the alphabet using two flags. You
might want to send a message that contains more than just letters.
How many other symbols could you send using this code?
Ruth from Swanborne House School describes some unusual shapes very clearly.
Go to last month's problems to see more solutions.
When you think of spies and secret agents, you probably wouldn’t think of mathematics. Some of the most famous code breakers in history have been mathematicians.
A game for 2 people that everybody knows. You can play with a
friend or online. If you play correctly you never lose!