The park you will spend most of your time in is Magic Kingdom. I'd recomend spending 2 days at this park to get it all done. I would love to list all the age appropriate rides and attractions for you but we are limited to the size of our answers, so I have linked you to the Disney website that lists age appropriate rides and attractions for your children. Click
here to review this list. Animal Kingdom is also a park with many rides and attractions for your children's ages. You will probably need 2 days here as well. Click
here to see this list. Hollywood Studios has a few areas that are geared for young children. One day is enough. Click
here to see this list. At Epcot, unless your children are interested in seeing the different country pavilions there aren't many rides and attractions for them. I have linked you with a list for this park but I would probably save this park for when they are a little older. Click
here to see this list. I would recomend spending 2 days at Magic Kingdom and then a break, followed by Animal Kingdom and another break, followed by Hollywood Studios.
On the Disney website you can customize your own park map to help you stay focused on rides and attractions that are of interest to your children. When you are on the page just click on "customized maps", then click on one of the parks. Then you can start inputing the rides and attractions you wish to see. Click
here to customize a map.