Patterns and Sequences: Age 11-14

This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.

Frogs

Age 11 to 14Challenge Level

How many moves does it take to swap over some red and blue frogs? Do you have a method?

Growing Surprises

Age 11 to 14Challenge Level

Can you find the connections between linear and quadratic patterns?

1 Step 2 Step

Age 11 to 14Challenge Level

Liam's house has a staircase with 12 steps. He can go down the steps one at a time or two at time. In how many different ways can Liam go down the 12 steps?

Odds, Evens and More Evens

Age 11 to 14Challenge Level

Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...

Picturing Triangular Numbers

Age 11 to 14Challenge Level

Triangular numbers can be represented by a triangular array of squares. What do you notice about the sum of identical triangle numbers?

Elevenses

Age 11 to 14Challenge Level

How many pairs of numbers can you find that add up to a multiple of 11? Do you notice anything interesting about your results?

Picturing Square Numbers

Age 11 to 14Challenge Level

Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?

Days and Dates

Age 11 to 14Challenge Level

Investigate how you can work out what day of the week your birthday will be on next year, and the year after...

Shifting Times Tables

Age 11 to 14Challenge Level

Can you find a way to identify times tables after they have been shifted up or down?

Beach Huts

Age 11 to 14Challenge Level

Can you figure out how sequences of beach huts are generated?

Summing Consecutive Numbers

Age 11 to 14Challenge Level

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

Squares in Rectangles

Age 11 to 14Challenge Level

A 2 by 3 rectangle contains 8 squares and a 3 by 4 rectangle contains 20 squares. What size rectangle(s) contain(s) exactly 100 squares? Can you find them all?

Triangle Numbers

Age 11 to 14Challenge Level

Take a look at the multiplication square. The first eleven triangle numbers have been identified. Can you see a pattern? Does the pattern continue?

Tower of Hanoi

Age 11 to 14Challenge Level

The Tower of Hanoi is an ancient mathematical challenge. Working on the building blocks may help you to explain the patterns you notice.

Age 11 to 14Challenge Level

Choose a couple of the sequences. Try to picture how to make the next, and the next, and the next... Can you describe your reasoning?

Coordinate Patterns

Age 11 to 14Challenge Level

Charlie and Alison have been drawing patterns on coordinate grids. Can you picture where the patterns lead?

Age 11 to 16

Dave Hewitt suggests that there might be more to mathematics than looking at numerical results, finding patterns and generalising.

Spaces for Exploration

Age 11 to 14

Alf Coles writes about how he tries to create 'spaces for exploration' for the students in his classrooms.

Charlie's Delightful Machine

Age 11 to 16Challenge Level

Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?

Seven Squares

Age 11 to 14Challenge Level

Watch these videos to see how Phoebe, Alice and Luke chose to draw 7 squares. How would they draw 100?

What Numbers Can We Make Now?

Age 11 to 14Challenge Level

Imagine we have four bags containing numbers from a sequence. What numbers can we make now?

Patterns and Sequences - Short Problems

Age 11 to 16

A collection of short problems on patterns and sequences.

What Numbers Can We Make?

Age 11 to 14Challenge Level

Imagine we have four bags containing a large number of 1s, 4s, 7s and 10s. What numbers can we make?

You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.