Chalk writing on the blackboard: Listen & Download Chalk writing on the blackboard .mp3 Error! Change your browser, please! ⇓ Download Manual pencil sharpener ⚠ Eraser ⚠ Apply tape to tape ⚠ Removing the ballpoint pen cap ⚠ Scissors cutting paper ⚠ Stapler ⚠ Remove eraser by hand ⚠ Put ballpoint pen on paper ⚠ Pressing a button on a ballpoint pen (on a ⚠ Electric pencil sharpener ⚠ Put the cap on the marker ⚠ Pen writing ⚠ ★★★★★