# Target Boards- a good way of revising types of number and more

The idea of target boards has been around for a while now, and every time I bump into a maths AST, target boards are always something they seem to suggest. They are simple and good for revising types of number.

Show your pupils a grid of numbers like this:

Then say something like “how many multiples of 4 can you find?” Get the pupil who finds the most to read them out and highlight them. See if any other pupils found different ones.

You can use this idea for revising other concepts such as:

- how many factors of 48 are there?
- which number on the grid has the most factors?
- how many prime numbers are there?
- how many square numbers are there?
- how many cube numbers are there?
- how many triangle numbers are there?
- give me two numbers that have a sum of 18
- give me three numbers that have a product of 120
- how many odd numbers are there?
- how many even numbers are there that are also a factor of 60?
- how many numbers are there in the sequence 2n + 3?
- how many numbers are there from the Fibonacci Sequence?
- If I tossed a coin and it landed on the grid randomly, what is probability it would land on a multiple of 4?

There are lots of variations you can do with this activity; split the class into two groups and get them to compete, individual time trials etc.

Lovely 🙂

I love this idea, especially as we work through number sets this time of year. Out of curiosity, are there repeated numbers there on purpose? I see 79 3 times; does that add something to an activity I’m not seeing?

Hi,

I wrote an Excel file to generate the grids for me really quickly. I used the RAND() function to create the numbers and so there are likely to be repeats. Perhaps we could ask “which number is the mode?”!!!

Best wishes,

Will

Works well with rounding: how many numbers round to x to the nearest 10, etc

Great resource though, you just need to think outside the box for questions, as while questions on types and properties of numbers work well, there is so much more to be had.

And making it a competition by pairing pupils up is definitely the way to go.