What is the main benefit of having students write three sentences summarizing their learning in mathematics?

The main benefit of having students write three sentences summarizing their learning in mathematics is that it encourages them to elaborate on new ideas. This practice allows students to process and articulate their understanding of mathematical concepts, reinforcing their comprehension and facilitating deeper cognitive engagement with the material. As they summarize, students must sift through their learning to identify the key ideas, which can help clarify their understanding and solidify the concepts in their memory. Additionally, elaboration promotes critical thinking, as students must make connections between different mathematical ideas and express these connections clearly in their summaries. Ultimately, this practice supports the development of a robust understanding of the subject matter, enabling students to internalize what they have learned effectively.