Reading
https://www.lalilo.com/ (right now it's free; helps with phonics and comprehension! Great for K, 1, 2, and those that need help with basic reading foundations)
https://readtheory.org/ (Reading Comprehension-passages and questions-children are assessed on their levels).
http://www.readwritethink.org/ (Student Interactives )
https://www.storylineonline.net/library/
(The SAG-AFTRA Foundation’s award-winning children’s literacy website, Storyline Online, streams videos featuring celebrated actors reading children’s books alongside creatively produced illustrations)
https://www.pbs.org/parents/learn-grow/all-ages/literacy
(Games and activities to do with young learners to build literacy skills. )
(Reading Comprehension fiction and non-fiction passages about various subjects and topics-high interest with comprehension questions)
https://www.starfall.com/h/ ( Teaches basics of reading. Features interactive books for all grade levels.)
Math
https://nrich.maths.org/9086 (Games and interactive tools)
https://www.khanacademy.org/math/k-8-grades (Free online lessons and practice organized by grade level/course )
https://www.thatquiz.org/ (Practice problems (quiz) organized by topic that gives immediate feedback. You can choose the length and difficulty level. )
www.Freckle.com (Students automatically practice at their level after they take a brief placement test)
https://www.starfall.com/h/ (great for phonics and comprehension, for all math content; review and enrichment.)
https://xtramath.org/ (great for skill practice at any level for addition, subtraction, multiplication, and division!)
Writing
https://readwritethink.org/ (Grades K-12-reading, writing practice)
https://boomwriter.com/ (Grades 2-6 practice for all writing skills)
https://FunEnglishGames.com/ (Grades 2-6-writing in a game format)
https://StoryboardThat.com/ (Grades 2-6 interactive practice by creating a storyboard as a graphic organizer.
https://Storyjumper.com/ (Grades 2-6 Interactive resource where writing is broken down into steps on a graphic organizer to be put together to create a whole story.
https://www.arcademics.com/games/ (Games in all content/skill areas!)