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I'm Eight

Find a great variety of ways of asking questions which make 8.

Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

Noah

Noah saw 12 legs walk by into the Ark. How many creatures did he see?

Ring a Ring of Numbers

Age 5 to 7
Challenge Level

Here is a picture of four numbers placed in squares on a circle so that each number is joined to two others:

Four numbers positioned on a circle as if they were at the 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock positions of a clock face. Reading around in a clockwise direction from the 12 o'clock position, the numbers are: 2, 4, 9, 1

Four numbers positioned on a circle as if they were at the 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock positions of a clock face. Reading around in a clockwise direction from the 12 o'clock position, the numbers are: 2, 4, 9, 1

What do you see?
What do you notice?

Choose four numbers from this list: 1, 2, 3, 4, 5, 6, 7, 8, 9 to put in the squares so that the difference between joined squares is odd.
Only one number is allowed in each square. You must use four different numbers.
What can you say about the sum of each pair of joined squares?

What must you do to make the difference even?
What do you notice about the sum of the pairs now?

Here are some sheets for recording your solutions.

This problem is based on an idea taken from "Apex Maths Pupils' Book 2" by Ann Montague-Smith and Paul Harrison, published in 2003 by Cambridge University Press.