As I was searching for hands on lessons to teach second grade math skills, I found this site: hand2mind.com
Here is a perfect guided math lesson on writing number sentences. This sample lesson is free for you to download.
Let’s look at this guided math lesson on writing number sentences and some pictures from hand2mind.com
Once there, click in the search bar and search for “hands on standards”. Once that shows up, on the left hand side, click “articles for hands on standards”. I scrolled down to “Hands on Standards” or http://www.hand2mind.com/Brands/Hands-On-Standards See the bottom article?
Next I scrolled down to Resources and Samples. These are free lessons by grade levels with the state standard for math. I clicked on Grade 2: Writing Number Sentences
Once you click on that, this sample guided math lesson on writing number sentences opens up. Love how this lesson uses manipulatives. I suggest Greg Tang’s idea of using unifix cubes instead of base ten blocks so the students don’t get lost in the trading in of one ten for ten ones. This lesson gives the objective and the CCSS. It explains the activity and math concept to the teacher. It even gives other ideas about using hundreds charts or ten frames, which are good tools for students to learn the foundational math concept. Then look at the picture of the activity.
This lesson ends with more practice problems for students to do at the guided math table with teacher guidance if needed.
Look at the sample answer key. I included a picture that has part of the practice problems and part of the challenge question. Teachers use the challenge question in small groups after two days of practice. Students partner up and talk about their reasoning. This helps them work on process standards skills of reasoning, communicating, and perseverance. If students understand the symbols and when to use them, they have developed a deep foundational understanding for this grade level.