Can you find a rule which connects consecutive triangular numbers?
Can you find a rule which relates triangular numbers to square numbers?
Show that all pentagonal numbers are one third of a triangular number.
This function involves absolute values. To find the slope on the slide use different equations to define the function in different parts of its domain.
Draw graphs of the sine and modulus functions and explain the humps.
The family of graphs of x^n + y^n =1 (for even n) includes the circle. Why do the graphs look more and more square as n increases?