Question Posing

							                                  Posing Powerful Questions

Goal(s) for a Specific Lesson                                                                         Grade
◦ Students will explain with justification how simple interest amounts are affected when one of
  the variables in a simple interest calculation is changed.                                          MEL3E




Curriculum Expectation(s) – Saving, Investing, and Borrowing 2.1
◦ Determine, through investigation using technology (e.g., calculator, spreadsheet), the effect on simple
   interest of changes in the principal, interest rate, or time, and solve problems involving applications of
   simple interest

Big Idea(s) addressed by the expectations
◦ BI 2 – Limited information about a number or numerical relationship sometimes, but not always, allows
   us to predict other information about that relationship
       i.e. Sometimes if you know a little bit about a number or a number relationship, you know more
       than you realized.


Parallel Question
       You are thinking about investing $6000 for 2 years in an account paying interest at the rate of 4%
       per year.

       Option 1: How will the amount of interest you earn be affected if you double one of the variables -
       either the Principal, the rate, or the time?

       Option 2: How will the amount of interest you earn be affected if you double any two of the
       variables - Principal, rate, or time?

       Option 3: How will the amount of interest you earn be affected if you double all of the variables –
       Principal, rate, and time?




Sample Consolidation Question
     Create an example to show how you could change one of the variables in a simple interest
     calculation to triple the amount of the interest earned.