[alawton]

I have taught open ended unstructured classes to kids before and I know it can be tough. Try games like Pictionary and concentration for vocabulary words that you are teaching. Those work well for students at different levels. For grammar concepts form sentences that include the grammar you are teaching. Cut out each individual word, mix them up and have the girls, as a team, form the sentences. If the older one is taking over, have them work alone and let the big sister correct the mistakes of the younger one.

You could have the older sister read a passage in English and let the other girl listen and answer questions on the reading. One game I love for pronunciation skills is to have one student read a paragraph in English. This student deliberately pronounces one word wrong per sentence to see if the other can figure out what it was. Good luck!

Andrew