This app is the whole point layer 1. In this app there are 200 microns-words not found in the first application. The screen resolution, layout, operation and sound were improved. Once all the letters known that exercise can be used (around February), students of the first grade or group of three or foreigners. All words are supported by an image, by the spoken word and, possibly, in the improvement by the spoken individual letters. Do this exercise made relying on my 25 years of experience in the 1st grade. Billiau Danny.