Difference between revisions of "Activities/Abacus/Worksheet"
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== Fractions == | == Fractions == | ||
Start Abacus [[File:Abacus-icon.png]], | Start Abacus [[File:Abacus-icon.png]], | ||
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select the Fraction abacus. | select the Fraction abacus. | ||
[[File:Functionabacus.jpg]] | [[File:Functionabacus.jpg]] | ||
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Slide one of the 1/2 beads to represent 1/2 | Slide one of the 1/2 beads to represent 1/2 | ||
[[File:Abacus1of2.jpg]] | [[File:Abacus1of2.jpg]] | ||
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Another way to represent 1/2 is to slide half of another string of fraction beads, for example slide 2 of the 1/4 beads. That is (2 x 1)/4 = 2/4 = 1/2 | Another way to represent 1/2 is to slide half of another string of fraction beads, for example slide 2 of the 1/4 beads. That is (2 x 1)/4 = 2/4 = 1/2 | ||
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How many ways can you make 1/2, see the [[Activities/Abacus/Worksheet/Answersheet | answersheet]] | How many ways can you make 1/2, see the [[Activities/Abacus/Worksheet/Answersheet | answersheet]] | ||
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Only some of the strings of beads can be used to make 1/2. Which ones? Why? see the [[Activities/Abacus/Worksheet/Answersheet | answersheet]] | Only some of the strings of beads can be used to make 1/2. Which ones? Why? see the [[Activities/Abacus/Worksheet/Answersheet | answersheet]] | ||
Revision as of 03:17, 4 April 2011
Fractions
Start Abacus 
,
select the Fraction abacus.
Slide one of the 1/2 beads to represent 1/2
Another way to represent 1/2 is to slide half of another string of fraction beads, for example slide 2 of the 1/4 beads. That is (2 x 1)/4 = 2/4 = 1/2
How many ways can you make 1/2, see the answersheet
Only some of the strings of beads can be used to make 1/2. Which ones? Why? see the answersheet