Home › Activity Library › Activities for HSG.MG.2 Common Core standard Activities for HSG.MG.2 Real-world activities aligned to this standard. Search 1 activity Standard: HSG.MG.2 × Browse full library → How many gumballs are there? Gumball Machine Problem from Brian Marks on Vimeo This problem is a little puzzle to get your students thinking, estimating, and calculating. We've given you a pdf file... Number Sense Geometry Grades 6–HS