Meritnation is online education portal that provides studymaterial for kids from 1 std to 10 std . It also includes NCERT solutions for cbse students. There are many animated videos that helps child to understand the concept very well. In addition it also give you practice for Vedic Maths to excel in mathematics. Charges are within reach as per package. I used for my daughter and found that it is useful. As sometimes we explain term child don't get it but get it by seeing the animated videos. I would suggest please add more animated videos rather than teachers.
There are topic test after every topic. For languages grammer is very well covered. It also covers lot of skills in game based activities.