How many tiles do we need to tile these patios?
A follow-up activity to Tiles in the Garden.
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 time?
Explore one of these five pictures.
In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can you predict what will happen?
Can you find out how the 6-triangle shape is transformed in these tessellations? Will the tessellations go on for ever? Why or why not?
Investigate the area of 'slices' cut off this cube of cheese. What would happen if you had different-sized block of cheese to start with?
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.
Investigate these hexagons drawn from different sized equilateral triangles.
Bernard Bagnall describes how to get more out of some favourite NRICH investigations.
Here are many ideas for you to investigate - all linked with the number 2000.
Explore Alex's number plumber. What questions would you like to ask? What do you think is happening to the numbers?
In my local town there are three supermarkets which each has a special deal on some products. If you bought all your shopping in one shop, where would be the cheapest?
Can you make these equilateral triangles fit together to cover the paper without any gaps between them? Can you tessellate isosceles triangles?
Why does the tower look a different size in each of these pictures?
This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?
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?
Follow the directions for circling numbers in the matrix. Add all the circled numbers together. Note your answer. Try again with a different starting number. What do you notice?
Investigate the different ways these aliens count in this challenge. You could start by thinking about how each of them would write our number 7.
Explore Alex's number plumber. What questions would you like to ask? Don't forget to keep visiting NRICH projects site for the latest developments and questions.
I cut this square into two different shapes. What can you say about the relationship between them?
This activity asks you to collect information about the birds you see in the garden. Are there patterns in the data or do the birds seem to visit randomly?
Use the interactivity to find all the different right-angled triangles you can make by just moving one corner of the starting triangle.
Take a look at these data collected by children in 1986 as part of the Domesday Project. What do they tell you? What do you think about the way they are presented?
How many faces can you see when you arrange these three cubes in different ways?
Bernard Bagnall looks at what 'problem solving' might really mean in the context of primary classrooms.
Can you continue this pattern of triangles and begin to predict how many sticks are used for each new "layer"?
Investigate and explain the patterns that you see from recording just the units digits of numbers in the times tables.
Polygonal numbers are those that are arranged in shapes as they enlarge. Explore the polygonal numbers drawn here.
Can you make the most extraordinary, the most amazing, the most unusual patterns/designs from these triangles which are made in a special way?
How many triangles can you make on the 3 by 3 pegboard?
We need to wrap up this cube-shaped present, remembering that we can have no overlaps. What shapes can you find to use?
Using different numbers of sticks, how many different triangles are you able to make? Can you make any rules about the numbers of sticks that make the most triangles?
What is the largest cuboid you can wrap in an A3 sheet of paper?
Investigate what happens when you add house numbers along a street in different ways.
How many different sets of numbers with at least four members can you find in the numbers in this box?
A thoughtful shepherd used bales of straw to protect the area around his lambs. Explore how you can arrange the bales.
How can you arrange the 5 cubes so that you need the smallest number of Brush Loads of paint to cover them? Try with other numbers of cubes as well.
When Charlie asked his grandmother how old she is, he didn't get a straightforward reply! Can you work out how old she is?
What happens when you add the digits of a number then multiply the result by 2 and you keep doing this? You could try for different numbers and different rules.
Investigate how this pattern of squares continues. You could measure lengths, areas and angles.
Compare the numbers of particular tiles in one or all of these three designs, inspired by the floor tiles of a church in Cambridge.
Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?
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?
"Ip dip sky blue! Who's 'it'? It's you!" Where would you position yourself so that you are 'it' if there are two players? Three players ...?
The ancient Egyptians were said to make right-angled triangles using a rope with twelve equal sections divided by knots. What other triangles could you make if you had a rope like this?
An activity making various patterns with 2 x 1 rectangular tiles.
If the answer's 2010, what could the question be?
Investigate the different ways you could split up these rooms so that you have double the number.
What is the smallest cuboid that you can put in this box so that you cannot fit another that's the same into it?