These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
What is the largest number of circles we can fit into the frame
without them overlapping? How do you know? What will happen if you
try the other shapes?
Each light in this interactivity turns on according to a rule. What
happens when you enter different numbers? Can you find the smallest
number that lights up all four lights?
I am thinking of three sets of numbers less than 101. They are the
red set, the green set and the blue set. Can you find all the
numbers in the sets from these clues?
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
I am thinking of three sets of numbers less than 101. Can you find
all the numbers in each set from these clues?
Mr Lewis' class made some beautiful curves with their straight
Go to last month's problems to see more solutions.
In this article for teachers, Alan Parr looks at ways that
mathematics teaching and learning can start from the useful and
interesting things can we do with the subject, including modelling
This game challenges you to locate hidden triangles in The White
Box by firing rays and observing where the rays exit the Box.