Proofs as Logic
Here is a short and sweet share on my Proofs Scaffolded card sort. I made 3 levels of logic proofs to get kids thinking about proofs as reasoning and logic rather than a collection of rules. I color coded the cards so I knew what level each group was working on and had them do at least 2 (most wanted to do all 3). This activity did a great job of allowing students to think about connections and reasoning. It also illuminated something I wasn't expecting: it showed me student's preferences on proof writing. Some laid out each card in a beautiful list, just like a two column proof, some had a progression going across like a flow chart proof, and others did almost sentence frames like a paragraph proof. HOLY MOLY! I love when you get more out of an activity than you anticipate! For years my students had complained about two column proofs, and here some automatically did them! I don't have beautiful pictures because this was a couple years ago and being a TOSA,