1. Mathematical argumentation in middle school - the what, why, and how : a step-by-step guide with activities, games, and lesson planning tools /: a step-by-step guide with activities, games, and lesson planning tools. (2017) Authors: (Mathematics teacher), Knudsen, Jennifer; Stevens, Harriette; Lara-Meloy, Teresa; Kim, Hee-Joon; Schechtman, Nikki Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗