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1st & 2nd Grade Websites

Seesaw
IXL
Mystery Doug
Xtra Math
Greg Tang MathMystery Science
Scholastic
ProdigyNitrotype
iReady
Daily 5
Reading Stamina Videos for Kids/Parents
Moby Max
Reading, Math, Science, and Social Studies
ReadWorks
Free Reading with comprehension questions, a large reading library of mostly nonfiction articles on a variety of subjects and grade levels (K-12)

3rd - 5th Grade Websites

Scholastic
Greg Tang Math
Mystery Science
iReady
Prodigy
Nitrotype
IXL
Mystery Doug
Moby Max
Reading, Math, Science, and Social Studies
Readworks
Free Reading with comprehension questions, a large reading library of mostly nonfiction articles on a variety of subjects and grade levels (K-12) 
Daily 5
Reading Stamina Videos for Kids/Parents