Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?
Watch the video to see how Charlie works out the sum. Can you adapt his method?
A story for students about adding powers of integers - with a festive twist.
Simple additions can lead to intriguing results...
Can you see how this picture illustrates the formula for the sum of
the first six cube numbers?
Square numbers can be represented as the sum of consecutive odd
numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?