As with multiples, the children should already know what prime numbers are. Complete the BBC Bitesize activity and watch the Corbettmaths video. They could also watch around the first eight minutes of last Monday's BBC Bitesize programme but they don't have to. They should then work through the different activities. To identify the prime numbers on the first activity, they could use a 'sieving' method which we used in class at the start of P7: cross out 1 as 1 isn't considered to be a prime number; shade/colour all the multiples of 2; shade/colour any multiples of 3 still left; shade/colour any multiples of 5 still left and, finally, shade/colour any multiples of 7 still left (watch out for a couple in the 90s!) If this is done correctly, all the unshaded/uncoloured numbers are prime numbers.
Our cookies ensure you get the best experience on our website.
Please make your choice!
Some cookies are necessary in order to make this website function correctly. These are set
by default and whilst you can block or delete them by changing your browser settings, some
functionality such as being able to log in to the website will not work if you do this.
The necessary cookies set on this website are as follows:
A 'sessionid' token is required for logging in to the website and a 'crfstoken' token is
used to prevent cross site request forgery. An 'alertDismissed' token is used to prevent
certain alerts from re-appearing if they have been dismissed.
to improve the website performance by capturing information such as browser and device
types. The data from this cookie is anonymised.
Cookies are used to help distinguish between humans and bots on contact forms on this
A cookie is used to store your cookie preferences for this website.
Cookies that are not necessary to make the website work, but which enable additional
functionality, can also be set. By default these cookies are disabled, but you can choose to
enable them below: