Chalk writing on the blackboard: Listen & Download Chalk writing on the blackboard .mp3 Error! Change your browser, please! ⇓ Download Tear off tape ⚠ Remove eraser by hand ⚠ Put the ballpoint pen on the table ⚠ Stamp, Plastic seal ⚠ Electric pencil sharpener ⚠ Pen writing ⚠ Take out a pencil from the pile. ⚠ Manual pencil sharpener ⚠ Eraser ⚠ Put ballpoint pen on paper ⚠ Pressing a button on a ballpoint pen (on a ⚠ Pressing a button on a ballpoint pen ⚠ ★★★★★