I love books like this with simple, doable activities that introduce kids to important topics. The book design is nice. Any person could pick this up and quickly do a few activities about ancient Greece or Rome with little or no preparation.
I was, however, disappointed to find several errors almost immediately. The author explains that the Pythagoreans discovered 4 Platonic solids, then shows us how to make 5. (There are five.) She then explains that the Sieve of Eratosthenes works by crossing out the multiples of 2, 3 and 5. (She missed 7 for the 1-100 set, and the idea that every prime's multiples are crossed out in theory.) So, there are probably other errors, but it's just a fun book for kids.