A blackboard with stand, chalk, eraser and a few letters written, all in slight perspective. Drawn in Inkscape.
黑板與立場和信件
blackboard、chalk、chalkboard、education、letters、Library、MSB、School、school、stand、Web/Android UI
黑板、粉筆、黑板、教育、信、圖書館、MSB、學校、學校、支架、Web / Android UI
資料來源：openclipart ( https://openclipart.org/ )