Here's a genius, tactile way to reinforce correct letter formation.

Hold the magnetic pen, follow the arrows and pull the pen along the letter lines.

Pop! Pop! Pop! Beads rise up in the tray as you go, making it easy to see your progress in creating the letter. The sound created makes printing fun. 

A-to Z Magnatab is a meaningful companion to proper writing materials: lined paper and a pencil. 

A little practice can go a long way in encouraging correct printing form.