Have you used Same but Different Math images in your number talks? They are wonderful! For 3rd grade, they have set that I love for showing the relationship between multiplication and division, as well as a focus on using arrays. These can generate some engaging conversations with your students when they begin to notice important relationships between numbers. It's a great way to help with number sense. Check out the website (https://www.samebutdifferentmath.com/) for more categories. These were created by Dr. Sue Looney (Looney Math).