As a homeschooler, I used this in my curriculum for my three oldest, ages 6-9ish. Written in an easy-to-read format that often includes the retelling of myths and stories of the time, I found it to be a great introduction to the ancient civilizations.
The writing is actually quite good for a text and the stories and the overall content is broken down by various cultures as opposed to a time line format. As a result, it can get a little confusing since you are sometimes moving backwards and forwards in time, but overall, for younger ages this serves as a great intro to future, more detailed studies.
Topics covered include the nomads, Egyptians, Sumerians, early Jews, Babylonians, Assyrians, Ancient China, Ancient Africa, the Exodus, Phoenicians, early Greeks, Medes and Persians, Sparta and Athens, the Romans, Aryans of India, early Christians, and the Barbarians, as well as other related topics.
We also started Volume 2 which picks up seamlessly with the this first volume.
If you use a more literature based approach to education and have younger children, you will probably find this to be a useful resource.