This collection is one of our Primary Curriculum collections - tasks that are grouped by topic.
problem
Favourite
Break it up!
Age
5 to 11
Challenge level
In how many different ways can you break up a stick of seven interlocking cubes? Now try with a stick of eight cubes and a stick of six cubes. What do you notice?
problem
Street Sequences
Age
5 to 11
Challenge level
Investigate what happens when you add house numbers along a street in different ways.
problem
Favourite
Holes
Age
5 to 11
Challenge level
I've made some cubes and some cubes with holes in. This challenge invites you to explore the difference in the number of small cubes I've used. Can you see any patterns?
problem
Favourite
Count The Digits
Age
5 to 11
Challenge level
In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can you predict what will happen?
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
Unravelling Sequences
Age
7 to 11
Challenge level
Can you describe what is happening as this program runs? Can you unpick the steps in the process?
problem
Tables Without Tens
Age
7 to 11
Challenge level
Investigate and explain the patterns that you see from recording
just the units digits of numbers in the times tables.
problem
Favourite
Times Tables Shifts
Age
7 to 11
Challenge level
In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?
problem
Favourite
Domino sets
Age
7 to 11
Challenge level
How do you know if your set of dominoes is complete?
problem
Favourite
Button-Up Some More
Age
7 to 11
Challenge level
How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?
problem
Favourite
Sticky Triangles
Age
7 to 11
Challenge level
Can you continue this pattern of triangles and begin to predict how many sticks are used for each new "layer"?
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You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.