My elementary education students are creating vlogs that explain why different algorithms work for different operations. They have been creating roughly one video per week, posting them, and then getting feedback from the course grader. The only graded part of this is at the end of the semester after many drafts.
This week, we did a jigsawing-type activity to improve the videos (like most everything else, this idea was inspired by Andy Rundquist. On Tuesday, I split the students into four groups: one for addition, one for subtraction, one for multiplication, and one for division. The students came to class having watched all of the videos on their particular operation, and the class period was spent deciding what makes for a good explanation for that operation. At the end of the class, we split into new groups where one member of the group had just studied addition, one subtraction, one multiplication, and one division.
Today, we spent the entire class period reviewing videos in these teams. One team member was an “expert” on each operation from Tuesday, and they made suggestions on how to improve the explanations.
I asked everyone if this was useful enough to repeat on our fractions algorithms, and every student said that it was (most were emphatic). This appears to be a success.
My one reservation: although I am not sure, it appears that some students are trying to memorize a good explanation rather than understand. I know that I will be able to tell which students really understand from the oral exams, but I am wondering if it will be clear from the videos. Does anyone have any experience with memorizers?