These are print-ready PDF documents for writing practice. For simplicity, this was created using Google Docs -- an online tool similar to the Microsoft Word, but does not require downloading and installing. It works right in the browser.
The main feature of these printouts is that one page can contain up to 1000 characters. This is much more than in any children book you find in bookstores.
Version #1 (preferable)
This version was made at the time when Google Docs allowed different colors for the placeholding consonant and the following vowel. For example in เอียะ it was possible to separate and grey out อ from เ◌ียะ. This is better because the consonant edges are visible. Use it if you don't plan any edits.
Everything as zip archive:
Unfortunately, the editable sources have been lost because Google Docs is an online tool. With one of the updates, it has become impossible to separate placeholders from the vowels. So only non-editable PDF files are available.
Version #2 (most recent)
This is an updated version, to which editable sources exist. See below. In this version, the อ has been replaced by the ◌. This is slightly worse, because the consonant edges are not visible. But here we can change colors, fonts, sizes and so on.
Everything as zip archive:
Sources for v2
These are editable sources. Feel free to File → Make a copy and update it to match your needs.