Math Surprise from WORLDiscoveries & the work of George Gadanidis 20 Math Stories Conceptually rich. Emotionally engaging. Detailed lesson plans. In English, French & Spanish. Grades K-8. Buy individually - PDF Buy as a bundle - PDF or digital See a demo Math & Coding Books Engage students with powerful math ideas. Use coding to dynamically model and bring math concepts to life. Buy a math book - PDF Buy a coding book - PDF APPS Coding apps bring concepts to life. Dynamic modelling. Story-based contexts. See the apps Math Surprise Add conceptual surprise and insight. Engage students emotionally. Make math a wonderful story to share.