. My ds 3 we are starting this week hooked on phonics k and working on shapes and colors more and trying to get him to write. He already knows his letters he just refuses to write them.
A 3-year-old boy really may not be ready to write from a developmental motor perpective. I wouldn't push writing at this age unless he really showed an interest in it. His refusal could be because he needs to develop better hand, shoulder, and arm strength, stability, and coordination first, which would be entirely age-appropriate. If he wants to play at spelling and composition, but doesn't want to write, you can use refrigerator letters or scrabble tiles or even a computer keyboard in the interim, or have him use his fingers to draw or sculpt letters in sand, shaving cream, play-dough, etc.
Here is some more information on determining writing readiness and good pre-writing activities.
