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July $1$st $2001$ was on Sunday. July $1$st $2002$ was on Monday. July $1$st $2003$ was on Tuesday, but July $1$st $2004$ was on Thursday because $2004$ was a Leap Year.
When did July $1$st fall on a Monday again?
April $1$st $2002$ was on Monday. When did April $1$st fall on Monday again after that?
September $1$st $2003$ was on Monday. When did September $1$st fall on Monday again after that?
November $1$st $2004$ was on Monday. When did November $1$st fall on Monday again after that?
Which times on a digital clock have a line of symmetry? Which look the same upside-down? You might like to try this investigation and find out!
This investigation explores using different shapes as the hands of the clock. What things occur as the the hands move.
Do you know the rhyme about ten green bottles hanging on a wall? If the first bottle fell at ten past five and the others fell down at 5 minute intervals, what time would the last bottle fall down?