I was pleased with the students' work. I saw that students understood how to combine like terms and represent the same expression in more than one way. After reviewing the students' work, I was able to determine that they were on task and that they understood the lesson. This particular student did a good job of showing all the steps she took to solve the problem. She made an arithmetic error in the last step. This will be a good opportunity to talk with students about the importance of checking their work.