Letters & Sounds

Ideas for practicing at home:

Letter & Sound Videos

Sign Language ABC Videos

Digraphs & Vowels Videos

Recommended Apps & Websites:

Starfall is a my #1 recommendation!  It's a website and an app that includes great literacy & math activities for Pre-K -> 4th.  
ABC Ya is also a website and an app.  It allows 6 free games per week on the mobile app and unlimited free games through the website. Be aware that there ARE ads, but the games are fun.
Letter School is a (mostly) paid app, but I still recommend it because it's highly engaging.  Students can trace and hear about letters, shapes, numbers, and words.  You can check out the free version to try before you buy.