Please see these 2 teaching powerpoint slides for Maths, with activities attached - if the powerpoint I uploaded on the website hasn't worked for you. I know some people have had issues with it. These 2 links should be free to access! However, you can also watch the videos I have uploaded on to class dojo with my own explanations of how I would approach this topic in class.
Factor Bugs sheet -
Pick a number between 0-20 and see if you can draw the factors on the legs.
You can use pasta / pompoms / lego / buttons etc to see if you can share the number into groups.
For example: 18 pieces of pasta can be shared equally into 2 groups of 9. SO 2 and 9 are factors of 18 as they both divide equally into it.
Here is an example: