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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!

Transformation Tease

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?

Penta Play

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.

Hidden Meaning

Age 7 to 11
Challenge Level

This problem foxed some of you at first, but not for long! Elliot and Richard from Moorfield Junior School explain:

The lines down the middle of the symbols are mirror lines.
The right half of the symbol is a number or letter.

They sent us a picture of the missing symbol which they say is the number 6:

missing symbol

Ben from Emmanuel School and Emily who goes to Riccarton High School in New Zealand, also wrote clear explanations for deciphering the code. All three of these solutions agreed that the message said "Decode this". Very well done.