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2 articles trouvés pour ce sujet.
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How high is the ledge? |
2009-10-03 |
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gabby pose la question :
Standing on a ledge, there is a boat 25 degrees below you. The boat has a 1,000ft. tower. If the angle of elevation to the top of the tower is 15 degrees, how high is the ledge?
Stephen La Rocque lui répond. |
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Logico mathematical knowledge |
2002-01-23 |
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A teacher pose la question :
How does young children's logico mathematical knowledge develop?
Walter Whitely lui répond. |
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