Mathematical Discourse
"The person in the room doing the talking is doing the learning."
Researchers state that "students will only retain 20% of what they hear, 30% of what they see and 50% of what they see and hear (Ezrailson et al., 2006, p. 278). However, when teachers focus on interaction and communication in the classroom, students will retain 90% of what they say and do as they engage in discussions (Ezrailson et al., 2006, p. 278)." Read more here https://tspace.library.utoronto.ca/bitstream/1807/67054/1/Serio_Marylina_201406_MT_MTRP.pdf
Our brains think differently and more deeply about mathematics when we verbalize our ideas and strategies. Speaking about math helps students construct and consolidate meaning. Most assessments require students to explain their reasoning in order to be considered proficient, so it is important that we continuously provide opportunities for them to do so.
Strategies for promoting Mathematical Dialog
Fostering Communication in math class
