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Introduction: A green blackboard background with arithmetic symbols, book, green earth, pencil, ruler element headline text creative design cover, micro-dimensional style design, simple and exquisite typesetting, suitable for information teaching, teaching training courseware, teacher lectures, courseware and other scenes Applied blackboard background micro stereo teaching theme ppt template
Introduction: A green blackboard background with arithmetic symbols, book, green earth, pencil, ruler element headline text creative design cover, micro-dimensional style design, simple and exquisite typesetting, suitable for information teaching, teaching training courseware, teacher lectures, courseware and other scenes Applied blackboard background micro stereo teaching theme ppt template
