A wonderful website for letter recognition, letter sounds, and reading is:

www.starfall.com

Here's a recipe to make play-dough without cream of tartar:

https://stayathomeeducator.com/absolutely-perfect-no-cook-scented-play-dough-recipe-without-cream-tartar/?ck_subscriber_id=748358191

https://switchzoo.com/ (free)

https://www.funbrain.com/pre-k-and-k-playground  (free)

https://www.getepic.com/  (30 days free)

https://www.teachyourmonstertoread.com/  (free when using a computer)

https://www.abcya.com/

https://www.abcmouse.com/abt/homepage?8a08850bc2=T1220530391.1584304863.155  (30 days free)