This activity allows learners to investigate the solution to an equation by trial and improvement. Learners are led through multiple representations of the approximate solution of a quadratic equation using the spreadsheet and graphing applications. The form of the quadratic is introduced using the data and statistics graphing facility.
Before the Activity
Some knowledge of substituting numbers in formulas and different forms of quadratic equation is required.
During the Activity
Objective: to investigate the solutions to a quadratic equation numerically and graphically.
After the Activity
This could lead into further work on the algebraic solution of quadratic equations.