Ключевые слова: 3d, aid, analysis, analyze, analyzing, black, blackboard, board, brainstorm, brainstorming, business, chalk, chart, concept, conversation, diagram, education, english, flow, flowchart, foreign, hindi, idea, internet, japanese, language, learning, map, method, mind, mindmap, presentation, problem, process, read, rendering, scheme, school, solutions, solving, strategy, teacher,