Day 1 5-Minutes. (Driscoll, 1999) Maria has a red candle and a green candle. Each candle is 18 centimeters long. Maria lights each candle at the same.

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Presentation transcript:

Day 1 5-Minutes

(Driscoll, 1999) Maria has a red candle and a green candle. Each candle is 18 centimeters long. Maria lights each candle at the same time. The red candle takes 6 hours to burn out, but the green candle takes 3 hours to burn out. After one hour of burning, which candle is longer? How much longer?

Day 2 5-Minutes

(Driscoll, 1999) Maria has a red candle and a green candle. Each candle is 18 centimeters long. Maria lights each candle at the same time. The red candle takes 6 hours to burn out, but the green candle takes 3 hours to burn out. How much time will pass until one of the candles is exactly twice as long as the other?

Day 3 5-Minutes

(Driscoll, 1999) Maria lights two candles at the same time. Each Candle is 36 centimeters long. One candle takes 3 hours to burn out and the other takes 6 hours to burn out. How much time will pass until the slower-burning candle is exactly twice as long as the faster-burning one?

Day minutes

(Driscoll, 1999) Maria lights two candles of equal length at the same time. One candle takes 6 hours to burn out and the other takes 9. How much time will pass until the slower-burning candle is exactly twice as long as the faster- burning one?