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Using a fraction piece with a denominator of 6, we need to find a fraction that, when repeated twice, will cover 4 out of 6 equal parts of a circle. Since 4 out of 6 is equivalent to 2 out of 3, the fraction piece we need is 2/3.
A piece of an edge of a circle is called an ARC.
-- One sixth of a circle is a shape that looks like a piece of pie or an ice cream cone. -- It is called a "sector". -- The two straight lines meet at an angle of 60 degrees. -- The length of the curved line is (pi)R/3 . That's about 1.05 times the length of one of the straight lines.
Part of the circumference of a circle is an arc.
Mr. Kevin thinks that estimation can help students get real sense of conversion between fraction and percentage.
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