Reading is Fundamental: Read Aloud videos for students to watch.
Starfall: Free downloadable writing journals
PBS Kids: Games, videos, and activities for kids.
ABCYa: Learning games for kids - there is a free and a paid version.
Softschools: Online math games and practice by grade level.
Zearn: Online math practice connected to their Eureka Math lessons they work on in class. Students know their username and login.