2

4

2

6

10

8

12

14

Choose an even number less than 10.
Write the number on the spider’s back.
Write the number again in one of the inner spaces of the web. 
Double the number and write it in the next clockwise space.
Multiply the original number by 3 and write it in the next space.
Multiply the original number by 4 and write it in the next space.
Multiply the number by 5 and write it in the next space.
The inner set of spaces should be full. 
Carry on in the next ring of spaces, multiplying your original number by 6, 7, 8 and so on.
Be sure to start in the same section of the web each time.

What do you notice about the numbers in each segment of the web? (Look at the units digits).
Could you make a spider’s web for the numbers 1, 3, 5, 7 or 9? How would the web have to be different?
Could you make a web like this for 5 or 10?

Colour and decorate your web. Use your colouring to show up the pattern in the web.

Investigate: Sketch webs for all the numbers less than 10 (except 5). Which pairs of webs are most like each other? In what way are they alike? Do the pairs fit a pattern?

A Multiple Spider’s Web

A Multiple Spider’s Web

Use this web for odd numbers other than 5

(Why can’t you use 5 on this web?)

Multiple Spiders’ Webs – Teachers’ Notes

When completed the cells each segment of the spiral should contain numbers with the same units digit.

Odd numbers require webs with 10 spokes.

5 and 10 cannot make webs since they have only 2 and 1 units digit respectively.

Pairs of webs whose base numbers add up to 10 have mirror image patterns.

A possible extension activity :

Investigate the patterns in the digital roots of the multiples of numbers up to  and including 10 (or beyond). (Again pairs of base numbers that add up to 10 have mirror image sequences).