The Third Dimension
Here are four cubes joined together. How many other arrangements of four cubes can you find? Can you draw them on dotty paper?
How many Times?
Square Corners
What is the greatest number of counters you can place on the grid below without four of them lying at the corners of a square?
A Square of Numbers
A Mixed-up Clock
There is a clock-face where the numbers have become all mixed up. Can you find out where all the numbers have got to from these ten statements?
What's in the Box?
This big box multiplies anything that goes inside it by the same number. If you know the numbers that come out, what multiplication might be going on in the box?
Magic Vs
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
Take three numbers
What happens when you add three numbers together? Will your answer be odd or even? How do you know?
Play to 37
Build it up
Consecutive Numbers
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Buying a Balloon
Wonky Watches
Stuart's watch loses two minutes every hour. Adam's watch gains one minute every hour. Use the information to work out what time (the real time) they arrived at the airport.
Amy's Dominoes
Sealed Solution
Got It
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
Finding Fifteen
How Much Did it Cost?
Use your logical-thinking skills to deduce how much Dan's crisps and ice-cream cost altogether.
Oh! Harry!
This Pied Piper of Hamelin
Investigate the different numbers of people and rats there could have been if you know how many legs there are altogether!
Roll these Dice
Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?
Watch the clock
5 on the clock
Inky Cube
This cube has ink on each face which leaves marks on paper as it is rolled. Can you work out what is on each face and the route it has taken?
Dice in a Corner
How could you arrange at least two dice in a stack so that the total of the visible spots is 18?