This is my favourite educational site. I've completed most of the challenges and here are the solutions.
A fun game for two players. Created in Python 3 using pygame library. Rules are similar to tic-tac-toe, but a little bit more advanced (see github readme file).
I created this form in Google Spreadsheets so that our coaches would have an easy way to let us know that the time of lesson has changed. It is supposed to be right next to the schedule. It also has second list, which contains names and email addresses. A coach fills in names, day and time and hits send button. A notification pops up to let him know that the message has been sent successfully.
An app created in Android Studio that counts score in basketball.
An app created in Android Studio that orders coffee via email.
Fun games you can play in the terminal. Includes chrome-like dinosaur and tic-tac-toe.