Funbrain - more than 100 fun, interactive games that develop skills in math, reading, and literacy
http://www.funbrain.com/

Gamequarium - over 1500 games - test your skill! Games are grouped for Pk-2 and 3-6+. 
http://gamequarium.com/

Starfall - The Starfall reading program is designed to be fun, exciting, and to instill confidence in young children as they learn to read
http://www.starfall.com/

 Poptropica® is a virtual world in which kids explore and play

https://www.poptropica.com/

 Primary Games houses games and activities that meet curriculum needs for math, science, language arts, and social studies.

https://www.primarygames.com/games.php

 National Geographic Kids - Hosts over 100 fun, engaging, and interactive science, action, adventure, geography, quiz, and puzzle games.

https://kids.nationalgeographic.com/games/

               Crickweb - free online educational resources and games
http://www.crickweb.co.uk/

 PBS Kids - Educational games and videos from Curious George, Wild Kratts and other PBS KIDS shows!

https://pbskids.org/games/

 ABCya - Teacher-created and approved educational computer games for elementary students to learn math and language arts on the web.

https://www.abcya.com/

 Arcademics - educational video games that offer a powerful approach to learning basic math, language arts, vocabulary, and thinking skills.

https://www.arcademics.com/games/

 Scholastic provides children with 20+ days of educational articles and stories, videos, and fun learning challenges. 

www.scholastic.com/learnathome

 CoolMath4kids- play online math games that help them with addition, subtraction, multiplication, division, decimals, money and more.

https://www.coolmath4kids.com/

 Poetry by Kristine O'Connell George helps students and teachers understand poetry.  It also contains podcasts of poems in the Poetry Aloud section.
 http://www.kristinegeorge.com/

Cut-the-knot - interactive mathematical games and puzzles
http://www.cut-the-knot.org/