These are just about the greatest home learning tool ever:
We have 2 flags, 2 maps, constellations, and planets - the boys love them. One focuses on flags and maps and Two is my space man. When Two's school had a Children of the World fair, One was able to name 30 or more flags in minutes - "oh look, there's Yemen, Nicaragua, Thailand, India, Brazil, Argentina, Germany, Norway..." and on and on and on. Two surprised his teachers lately with his recitation of the planets, in order and including the asteriod belt. They've taken to using one and reading another at the same time, so I'm glad I bought 6.
These mats don't last forever, but they are wonderful, and they are so inexpensive you can always buy a second set. Enjoy.