This activity investigates how you might make squares and pentominoes from Polydron.
Using the 8 dominoes make a square where each of the columns and rows adds up to 8
Place the numbers 1, 2, 3,..., 9 one on each square of a 3 by 3 grid so that all the rows and columns add up to a prime number. How many different solutions can you find?
This is the semaphore alphabet:
Image by kind permission of http://inter.scoutnet.org/
Someone at the top of the hill sends a message to a friend in
the valley. A person in the valley behind also sees the message
being sent. They get the same message. What is it?
Are there any words that can make sense when viewed from the
front and the back? We have found at least one!