Flat simple small fresh teaching courseware ppt template

Opened book roll paper creative cover background, blue and green small fresh color, simple and flat design, flat and simple small fresh teaching courseware ppt template suitable for business teachers speaking, education and teaching courseware, work summary, business report, work report and other scene applications

Opened book roll paper creative cover background, blue and green small fresh color, simple and flat design, flat and simple small fresh teaching courseware ppt template suitable for business teachers speaking, education and teaching courseware, work summary, business report, work report and other scene applications