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Published byVincent Reeves Modified over 5 years ago

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ETL203 week 7 Developing fractional reasoning

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Fractions (decimals) are numbers

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Area models for understanding... Equivalent fractions Improper fractions and mixed numbers Addition and subtraction of fractions

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Length models for understanding… Fractions as numbers Ordering fractions Improper fractions and mixed numbers Equivalent fractions Addition and subtraction of fractions

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Quotient models for understanding… Converting fractions to decimals, particularly when the denominator is not a factor of 10, 100 etc. Note that all fractions result in either terminating or recurring decimals. Multiplying and dividing fractions

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Ratio models for understanding… Fractions as operators The idea of a reciprocal Percentages The rule of constant ratio

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Rule of constant ratio (equivalent fractions) The numerator and denominator of a ratio can be multiplied or divided by the same number without changing the value of the ratio.

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The Web sites Pattern blocks http://matti.usu.edu/nlvm/nav/frames_asid_171_g_3_t_2.ht ml http://matti.usu.edu/nlvm/nav/frames_asid_171_g_3_t_2.ht ml

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