Hi Carlos - thank you for that
What a good way to teach it (I am a primary teacher so generally only teach finding the nth term practically)
So is this right 7,11,15,19
It goes up in fours so it's 4n, 7 - 4 = 3 So the nth term is 4n + 3
Let me try another one 3, 8, 13, 18
It goes up in fives so it's 5n, 3 - 5 = -2 So the nth term is 5n - 2
In my younger days I did A Level maths and Further Maths - I can't remember anyone giving me a system to find out the nth term - you just had to work it out.
I like the idea of linking this straight to graphs.
Richard - linking another tread (Bridging Units) - this would make a great bridging unit for transistion from Year 6 to Year 7]