It's quite hard to pin down what 'reasoning' looks like. At KS1 we're looking for good 'because' statements. And if there are two or more which make a chain, that's progress.
This collection is one of our Primary Curriculum collections - tasks that are grouped by topic.
problem
Favourite
I Like ...
Age
5 to 7
Challenge level
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
problem
Favourite
Poly Plug Rectangles
Age
5 to 11
Challenge level
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
problem
Favourite
If the World Were a Village
Age
5 to 11
Challenge level
This activity is based on data in the book 'If the World Were a Village'. How will you represent your chosen data for maximum effect?
problem
Favourite
Two numbers under the microscope
Age
5 to 7
Challenge level
This investigates one particular property of number by looking closely at an example of adding two odd numbers together.
problem
Favourite
Wallpaper
Age
5 to 7
Challenge level
These pieces of wallpaper need to be ordered from smallest to largest. Can you find a way to do it?
problem
A Bag of Marbles
Age
5 to 7
Challenge level
Use the information to describe these marbles. What colours must be
on marbles that sparkle when rolling but are dark inside?
problem
Favourite
How Odd
Age
5 to 7
Challenge level
This problem challenges you to find out how many odd numbers there are between pairs of numbers. Can you find a pair of numbers that has four odds between them?
problem
Favourite
In the Playground
Age
5 to 11
Challenge level
What can you say about the child who will be first on the playground tomorrow morning at breaktime in your school?
problem
Favourite
Lots of Lollies
Age
5 to 7
Challenge level
Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?
problem
Favourite
Less is More
Age
7 to 11
Challenge level
Use your knowledge of place value to try to win this game. How will you maximise your score?