KCab, give yourself some time to adjust tot he new environment. Changes can be scary for young children, even if they know they are temporary.

I find that group work is useful when my kids are both or all demanding my attention. We've had great fun cooking together, doing science experiments, art, etc. Even history lessons can work for kids at different levels. I used to read a chapter of history aloud, ask oral questions of my younger child, and give written questions to my older child. Both enjoyed coloring maps, and doing related crafts. I realize that your options may be somewhat limited where you are, but maybe this will get you thinking of possibilities.