If you find something in your curriculum that strikes the interest of one of your kids, expand upon it.
Get a whole biography of some person mentioned in their history book, visit a veteran and learn history from those who lived it.
Cook “Math” one day instead of just doing the problems in a book. Learn the skeletal system by tracing your child and having them glue bones down to their outline, build a volcano in the sandbox with vinegar and baking soda.
Let your child start a business while they are still young to help learn financial skills.
Look for what motivates them and let it become part of your “school”.