Part time sitter for 2elementary aged kids

I have an 8 year old son and 10 year old daughter. They are pretty self sufficient for the most part, but are too young to be home alone yet. They usually stay with my parents while they're not in school and I have to work. I am needing someone to cover when Grandma and Grandpa can't watch them (single days or a week at a time). I might need you to stay with my kids when I leave for work in the mornings (6:30am) and get them to school by 8:30am. Then you would be done for the day. If there's no school, I would need you to take care of them from 6:30am-3:40pm typically. While you're with them, you might have to help them prepare breakfast, lunch or snacks and possibly take them to the park or something local. They are fun, creative and resourceful kids. We live in a single story home in Reynoldsburg's Brookside neighborhood. We have no pets and no allergies.