Exploring and noticing
problem
Rhombus It
Age
11 to 16
Challenge level
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.
problem
Parallelogram It
Age
11 to 16
Challenge level
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.
problem
Counting Stick Conjectures
Age
5 to 11
Challenge level
How many rectangles can you see? Are they all the same size? Can you predict how many rectangles there will be in counting sticks of different lengths?
problem
Three neighbours
Age
7 to 14
Challenge level
Take three consecutive numbers and add them together. What do you notice?
problem
Arranging Additions and Sorting Subtractions
Age
5 to 7
Challenge level
Order these four calculations from easiest to hardest. How did you decide?
problem
Subtraction Slip
Age
5 to 7
Challenge level
Can you spot the mistake in this video? How would you work out the answer to this calculation?
problem
Compare the Calculations
Age
7 to 11
Challenge level
Can you put these four calculations into order of difficulty? How did you decide?
problem
Countdown fractions
Age
11 to 16
Challenge level
Here is a chance to play a fractions version of the classic Countdown Game.
problem
Charitable Pennies
Age
7 to 14
Challenge level
Investigate the different ways that fifteen schools could have given money in a charity fundraiser.