I began my unit with bar models. I really liked using bar models but was unsure of how long I should spend working on them. Some of my students still refer to them, but not as often as I would like. I think that they saw the bar models as a "thing" and once I moved on to the percent equation, they didn't need to use that "thing" anymore. I attempted to use the percent equation instead of the percent proportion. In the 25 years that I have been teaching, I continue to switch back and forth between the two methods. I guess that I should have just taught both, but that sometimes is confusing. My students that are grade-level and higher do just fine with the equation and recognizing when to move the decimal, but my low kids really struggle with this. I wish that I would have used the percent proportion with them...but then I have the question of how do I want them to solve the proportion. Do I really want to teach "cross multiply & divide"?
Here is a copy of the first 5 questions and the "work" paper that I gave to my students. I also made an Educreations video for remediation on this topic. (Percent Video Tutorial) My biggest challenge is how to find the time to have the students watch the video and get the remediation that they need. I also need to remake this video for a better quality and probing questions for the students to think about. I keep trying....On to Integers!!