Do you love using "Thinking Maps" and the "Handwriting Without Tears" curriculum? I love using these two together when I am teaching about numbers. Our current math adoption does not include lessons on learning to write numbers and some days I like to have a focus number that we work with for the day. I created this set of worksheets just for this purpose.
Here is the number formation chart from "Handwriting Without Tears."
A note about grip:
"Handwriting Without Tears" recommends using short, thin, crayons and pencils. This encourages children to use a pincher grasp, as they are unable to "fist" these tiny writing tools. There are special crayons and pencils available through their website. However, you can simply break regular crayons into bits and purchase golf size pencils. I have my husband saw my regular size pencils in half and that does the trick.
This concept was a surprise for me as I have always been told that the "fat" crayons and pencils were developmentally appropriate. But after I carefully observed my students using these, I realized that these were too heavy for them. They did so much better with the small sizes.