Playdough is a fun, multi-sensory way to learn or practice letter formation. I have been using it for years to teach beginning writers how to form their letters
Just “write” the letter in the playdough (write it quite deeply to create a groove for your child to follow).
Both of you then hold the pencil and you guide your child’s hand around the letter while saying its name.
Your child is seeing, hearing and feeling the letter. (Research has shown that the more senses the easier it is for a child to learn.).
After a while your child will able to write the letter without your guiding hand. It’s so much easier to write in playdough than on paper.
Why not give it a go!