We've been working on prime and composite numbers, and factors and multiples this week (I've got some FABULOUS foldables to share with you on Sunday).
We (I keep saying "we" because I'm part of a special PD team for three-part lessons. Myself and another teacher (grade 2/3) team teach these lessons. Over the course of the year we do 6 half-day lessons in my room, and 6 half-day lessons in her room) then divided the class into similar ability pairings and presented this question (and a bag with a product of 300 written on it). Students worked together to find the answer. Some students used a factor tree to find their answer and were finished quite quickly (I gave these students a second, much harder, number to work with if they finished quickly). Other students worked through an "educated" guess and check strategy. In the end, all students came to the correct answer, some just got there quicker than others.
HERE). Basically, we had two groups for our bansho activity - students that used a factor tree to find the prime factors, and students who didn't. While the pairs were working on their solutions, we circulate around the class recording questions we have for the students, or noting students whose strategies should be shared with the class. Here are two examples of different strategies used by my students. Do you see the green dots in the right hand corner of their papers? When students finish a minds-on activity, they need to put a traffic light comprehension dot on the corner of their papers - green is for no problems, yellow is for some difficulty / questions, red is for a lot of difficulty / questions. It's a quick and easy way to students to reflect on their work.