Build New Textbook Math Decks · olivia-wen bundle Research, plan, create, edit, or review source-traceable Chinese primary-school mathematics PPT/PPTX decks for revised textbooks, especially Grade 4 first-semester materials. Use when work involves textbook-to-slide mapping, lesson objectives, teaching key/difficult points, lesson introductions, textbook characters such as 笑笑 or 智慧老人, exercise provenance, old/new edition comparison, classroom readability, or removing generic AI-like wording and visuals.