Window on the World

I recently ordered a copy of Window on the World, and it just arrived. I am very excited to begin using it with Elisabeth. It is, essentially, a version of Operation World modified for children. Instead of being heavy on facts and figures, it is heavy on pictures and stories that connect children with the countries for which they are praying. Each two-page country spread includes a small map inset, a picture of the national flag, basic facts (area, population, language, religion, exports), a narrative, and a list of requests for prayer and praise.

Has anyone used this with their kids?