Triangular numbers explanation
Prime number explanation
Square numbers
Square roots
Some games to play:
Square numbers
A huge selection of games
Have a good weekend,
Mrs D
PS If anyone wanted to make a video about the prime numbers etc they could email it to the class email address and I will post it on the blog
PPS Here is the link to the BBC site for the news stories on the comet we discussed.
A challenge for you: (from Nrich)

Try with the squares of the numbers between 4 and 20 .
Did you find any square numbers which cannot be made by adding two prime numbers together?