We're trying various things at home, including having my daughter type her Christmas thank-you notes on the same Smith-Corona she used on last year's Typewriter Day. That seems to be a big help, since she can focus less on forming the letters and the mechanics of holding the pen properly, and can pause to check spelling before she commits the letters to the page. We'll see if it becomes part of our homeschool toolkit. We also picked up a Pelikan "Pelikano Junior" pen for her to try with her handwriting time. It has a grip that subtly enforces the triangle grasp.
It's interesting to me that we're combining "old school" tools in her schooling, along with modern options like handwriting-practice apps and a Franklin speller. Very holistic-Californian, no?

