Have a go at this 3D extension to the Pebbles problem.
Watch these videos to see how Phoebe, Alice and Luke chose to draw 7 squares. How would they draw 100?
Three circles have a maximum of six intersections with each other.
What is the maximum number of intersections that a hundred circles
In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?
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?
How do you know if your set of dominoes is complete?
Explore the different tunes you can make with these five gourds.
What are the similarities and differences between the two tunes you
Three beads are threaded on a circular wire and are coloured either red or blue. Can you find all four different combinations?
What are the next three numbers in this sequence? Can you explain
why are they called pyramid numbers?
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?
Explore this how this program produces the sequences it does. What
are you controlling when you change the values of the variables?
While we were sorting some papers we found 3 strange sheets which
seemed to come from small books but there were page numbers at the
foot of each page. Did the pages come from the same book?
How many different ways can I lay 10 paving slabs, each 2 foot by 1
foot, to make a path 2 foot wide and 10 foot long from my back door
into my garden, without cutting any of the paving slabs?
Let's suppose that you are going to have a magazine which has 16
pages of A5 size. Can you find some different ways to make these
pages? Investigate the pattern for each if you number the pages.
Your challenge is to find the longest way through the network
following this rule. You can start and finish anywhere, and with
any shape, as long as you follow the correct order.
Take any two positive numbers. Calculate the arithmetic and geometric means. Repeat the calculations to generate a sequence of arithmetic means and geometric means. Make a note of what happens to the. . . .
An environment which simulates working with Cuisenaire rods.
Polygonal numbers are those that are arranged in shapes as they enlarge. Explore the polygonal numbers drawn here.
What is the remainder when 2^2002 is divided by 7? What happens
with different powers of 2?
What would you get if you continued this sequence of fraction sums?
1/2 + 2/1 =
2/3 + 3/2 =
3/4 + 4/3 =
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
Make new patterns from simple turning instructions. You can have a go using pencil and paper or with a floor robot.
Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...
Explain why the arithmetic sequence 1, 14, 27, 40, ... contains many terms of the form 222...2 where only the digit 2 appears.
Explore one of these five pictures.
Make some loops out of regular hexagons. What rules can you discover?
What is the total area of the first two triangles as a fraction of
the original A4 rectangle? What is the total area of the first
three triangles as a fraction of the original A4 rectangle? If. . . .
There are lots of ideas to explore in these sequences of ordered
Choose any 4 whole numbers and take the difference between
consecutive numbers, ending with the difference between the first
and the last numbers. What happens when you repeat this process
over and. . . .
Show that 8778, 10296 and 13530 are three triangular numbers and that they form a Pythagorean triple.
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?
Can you continue this pattern of triangles and begin to predict how many sticks are used for each new "layer"?
Take any whole number between 1 and 999, add the squares of the
digits to get a new number. Make some conjectures about what
happens in general.
Square numbers can be represented on the seven-clock (representing these numbers modulo 7). This works like the days of the week.
Make some intricate patterns in LOGO
What's the greatest number of sides a polygon on a dotty grid could have?
In this investigation, you are challenged to make mobile phone
numbers which are easy to remember. What happens if you make a
sequence adding 2 each time?
If the numbers 5, 7 and 4 go into this function machine, what
numbers will come out?
These sixteen children are standing in four lines of four, one behind the other. They are each holding a card with a number on it. Can you work out the missing numbers?
A introduction to how patterns can be deceiving, and what is and is not a proof.
If I use 12 green tiles to represent my lawn, how many different
ways could I arrange them? How many border tiles would I need each
Powers of numbers behave in surprising ways. Take a look at some of these and try to explain why they are true.
Find the next number in this pattern: 3, 7, 19, 55 ...
In this section from a calendar, put a square box around the 1st,
2nd, 8th and 9th. Add all the pairs of numbers. What do you notice
about the answers?
Investigate these hexagons drawn from different sized equilateral
There are ten children in Becky's group. Can you find a set of
numbers for each of them? Are there any other sets?
This article for teachers describes the exchanges on an email talk list about ideas for an investigation which has the sum of the squares as its solution.
Investigate the numbers that come up on a die as you roll it in the
direction of north, south, east and west, without going over the
path it's already made.
Liitle Millennium Man was born on Saturday 1st January 2000 and he will retire on the first Saturday 1st January that occurs after his 60th birthday. How old will he be when he retires?
EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.