Tagged: coefficient


Understanding quadratic sequences

Has one of your pupils ever asked you why you have to halve the second difference of successive terms in a quadratic sequence to get the coefficient of the n^2 in the nth term rule for the sequence?


An unusual way to teach plotting straight line graphs…

I bet you’ve not seen this one before… There is a linear relationship between air temperature and the number of times a cricket ‘chirps’ per minute. What an interesting idea for a lesson on plotting straight line graphs! After putting across the idea of the relationship, and motivating the pupils by explaining how the next time they are out and...