My favorite learning tool is a pencil.
Because it is a curved pencil, the outer shell of the pen is structured like an ink pen. The pencil case is made of hard transparent plastic, so the inside of the pen can be easily seen. Along the body of the pen, people print a lot of cute lemon yellow Doraemon cat pictures. The cap of the pen has a small strap so that the pen can be attached to the cover of the notebook. In particular, on the top of the lid, there is a very convenient yellow pencil eraser. The core of the pen is divided into many small pieces. Each intestine is about a knuckle long, with a detachable lead nib available. When writing a piece, just take it off and put it back to the end of the pen to get a new nib. Both fast and convenient.
I like my pencil very much. I will use it to draw lots of beautiful pictures.