We are currently working on lessons 3.2, 3.3,3.4, and 3.5 this week. We have a quiz on Friday over investigation 2. I regret to inform you that the students need to bring their own calculator to school for their math assignments. The calculators I provide have been abused (batteries taken out, dropped, tossed) and three cannot be used. I have never had this happen and I don't have any calculators to replace the missing ones. Thank you.