How can I teach 4 to 5 students at once of different classes in 2 hrs?

Question

I take tution classes at home. both 5th std., and 7th std students comes for tution at 2 'o clock to 4 'o clock. How can i teach them at once. i have no other option.

Answer 1

When you can't present the same information to all of them at once, instruct one group of students while the others work independently.

Answer 2

Try the one room schoolhouse approach.  Have some students work on one thing, while the others work on something else.  Have whoever knows more about a subject help the others.  

Good luck :d