My colleagues and I are re-writing our Algebra 2 course over the summer. At the moment we’re going with Michael’s excellent suggestion of “predictions” as the main idea, with functions (using a relationship metaphor) as the main tool (see last year’s discussion about all this). Our evolving google doc is available for anyone who wants to follow along. If you have any input, please chime in. I’ll add to this post as our ideas shape up.
7/16/12: We’ve updated the course standards and grading policy. Next step: design examples & criteria for each standard on what will be accepted as demonstrating proficiency.