The kids go to a local mosque and visit the Metropolitan Museum to see the truly splendid artistic output of Islam's early centuries.
I used the museum trip to teach my son about tesselation, craftsmanship, and the ingenuity of artisans working without modern technology.
I present it as a secular/cultural topic. I also point out to him the historical fact that Islam has accomplished nothing in recent centuries, and that it is critical to know that civilizations wax and wane, and to stay focused on the future.