Math:

www.mobymax.com/va372

https://www.ixl.com/math/grade-3

https://www.abcya.com/third_grade_computers.htm

https://www.hoodamath.com/games/third-grade.html

Reading: 
www.mobymax.com/va372

https://www.abcya.com/third_grade_computers.htm

https://www.readworks.org/student   (class code: QH4E7A)