Last week I had a couple of posts dealing with coordinate geometry. Those can be found here and here. There were some get suggestions in the comments, which are worth reading. One of my good friends Austin, a fellow teacher in my district wrote the following:
You should definitely look at the pooltastic problem that was developed from Howard County public schools. The problem is right up your alley for the objectives you are looking to cover. I used it for slopes, perpendicularity, and parallel lines. I made it a group worked problem and we spent time talking about the mathematical practices. We had one day to share how each group attacked the problem and then they needed to individually reflect on other groups’ methods. Check it out:
I checked it out and it really did align to almost all the objectives I wanted to cover in Day 65. The website is also a good place for resources, I haven’t dug around it much through… it is on my to do list.
I find it kind of hard to get excited about the context of building a pool for your parents so I modified it and took out the fluff. Here is the handout I gave students.
Have a look at their work
It was fun to watch students work and discuss how they wanted to show that the shape they chose was a rectangle.