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Ontario · Ontario Math · Grade 4

B1.9: Describe relationships and show equivalences among fractions and…

Describe relationships and show equivalences among fractions and decimal tenths, in various contexts.

The Ontario Mathematics, Grades 1–8 outcome B1.9 (Number) for Grade 4 says: “Describe relationships and show equivalences among fractions and decimal tenths, in various contexts.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Ontario Mathematics, Grades 1–8.

Fair Shares: Fractions and Decimals Grades 3–4

Is half always the same size? Where does three-quarters stand? Why is 3/4 + 2/4 not 5/8? Who jumped further, 1.4 m or 1.35 m? Four hands-on lessons where students fold, stand on a giant number line, measure recipes and measure their own jumps to make sense of fractions and decimals.

  • Who jumped further, 1.4 m or 1.35 m? 50–60 min

    Students do standing long jumps, measure them to the centimetre and write them as decimals of a metre, then settle an argument: is 1.35 m further than 1.4 m because 35 is bigger than 4? Students explain tenths and hundredths with a metre stick, write them as fractions and decimals, and compare decimals correctly.

Printable practice for B1.9

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Compared with Common Core: 4.NF.C.6.

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