Here are few helpful websites that you can use at home with your student!

Reading:
https://www.kidsa-z.com/main/Login
http://www.abcya.com/second_grade_computers.htm
https://www.readworks.org/
http://www.starfall.com/ 
https://www.barnesandnoble.com/b/books/kids/_/N-29Z8q8Ztu1

Math:
https://www.prodigygame.com/Play/
https://www.mathplayground.com/
http://funschool.kaboose.com/index.html
https://www.coolmathgames.com/
https://www.freemathhelp.com/index.html

Science:
http://www.pbs.org/parents/education/science/games/first-second/
https://kids.nationalgeographic.com/
http://www.sciencekids.co.nz/
http://www.scholastic.com/magicschoolbus/games/index.htm
http://www.sheppardsoftware.com/science.htm

Social Studies:
https://www.loc.gov/
https://www.si.edu/kids
https://www.icivics.org/
http://pbskids.org/rogers/buildBuild.html
http://congressforkids.net/index.htm

Miscellaneous:
https://www.classdojo.com/