Which times on a digital clock have a line of symmetry? Which look the same upside-down? You might like to try this investigation and find out!
What are the coordinates of this shape after it has been transformed in the ways described? Compare these with the original coordinates. What do you notice about the numbers?
A shape and space game for 2,3 or 4 players. Be the last person to be able to place a pentomino piece on the playing board. Play with card, or on the computer.
What is the missing symbol?
Now decode this in a similar way: