Human: What's the best way to teach my son to write his letters? Assistant: 
The best way to teach your son how to write his letters is to start with the basics. Have him practice tracing and forming each letter of the alphabet, then move on to practicing writing them in different shapes and sizes. Once he has a good grasp of the basics, you can have him practice writing words, phrases, numbers, and other symbols. Finally, encourage him to use a variety of materials such as pencils, pens, crayons, markers, etc., to help him develop his own unique style.