Now posted on the Secondary Math Assessment for Learning Website is 50 Ideas for Assessment for Learning in the Math Classroom file that I found on the website.  I have also attached it here for your convenience.

Please share with us any of the ideas that you try in your classroom.  I think that assessment for learning is an art that evolves with the students.  I have tried a few ideas in my classroom.  My students love the whiteboards and exit slips.  But I am going to try a few of these ideas.