Yоu аsk yоur students tо come up with lots of wаys to solve 38 + 65. One student sаys, "I sure would like it if that 38 was a 40 instead but I know I can't just add 2 because then the answer will be more than it is supposed to be. If I added 2 and also took away 2, I know there would be no affect in total; actually, that's just like adding zero. So that's what I'll do. I'll add 2 to 38 and take 2 away from 65. Now I have 40 + 63. I'll take 60 and put it with 40 to make 100 and then tack on the other 3 at the end to get 103 in total." 1. Show how you would record the student's thinking at the board while the student is talking. This should not be an equation string. 2. Show how to write the student's thinking as an equation string that makes the properties used by the student visible. 3. Explain how your equation string makes the properties used visible. Include mention of at least two properties used in this strategy.