Kate W: Terrific work! You make a good connection between fasting and the lunar calendar--people studied the phases of the moon so they could be prepared for whatever time of year Ramadan happened.
@johnlee Excellent work! Just one little thing, it's "Muslim people" not "Islamic"
Emily K: Terrific work! You make a good point that because Muslims pray 5 times a day they became observers of the sky. Not surprisingly, astronomy became an important field of study!
Ryan D: Excellent explanations of each pillar. You are correct that many mosques have an arrow showing the direction to Mecca. What kind of things do you think Muslims had to invent in order to know where Mecca is in relation to wherever they are?