Could the following be added in time to the review:
>>>Can you get the answer to the break-even question by common-sense reasoning, without paper and pencil?
Would this approach affect "the value of algebraically solving a system of linear equations" in any way?
In a message dated 12/2/2009 8:47:10 P.M. Eastern Standard Time, email@example.com writes:
Here is an example of my idea towards a stretching assessment. Tomorrow I'll have them work this out in groups, then I will have them do a similar problem for homework. This problem probably isn't nothing major in terms of stretching, but I think it requires using their knowledge of y=mx+b in a new context for them, plus they can also see the value of algebraically solving a system of linear equations.
To me this is an interesting review of linear equations. What do you all think?