Investigations 3 in Number, Data, and Space, Student Activity Book [Grade 4]

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About the Mathematics in This Unit

Dear Family,

Our class is starting a new mathematics unit about fractions called Fraction Cards and Decimal Grids. During this unit, students represent halves, fourths, eighths, thirds, sixths, twelfths, fifths, and tenths; find equivalent fractions; and compare fractions. Students are introduced to decimal notation, represent decimals, and compare decimals. They begin computation with fractions: adding and subtracting fractions and multiplying fractions by whole numbers.

Throughout the unit, students work toward these goals:

Benchmark/Goal Examples
Identify equivalent fractions and explain why they are equivalent. Handwritten text and a rectangle. d

I broke the thirds in half to make sixths. There are two sixths in 1 third .

Compare fractions with like and unlike denominators.

Which is greater, 5 sixths or 3 fourths ?

Handwritten text reads: “Five-sixths is greater than three-fourths because three-fourths is one-fourth away from 1 and five-sixths is only one-sixth away from 1.”

Add and subtract fractions and mixed numbers with like denominators. Nadeem is walking to the park, which is 9 tenths of a mile away. He has walked 4 tenths of a mile. How much farther does Nadeem have to walk?
Multiply a fraction by a whole number.

Richard's recipe for chocolate chip cookies requires 1 fourth of a cup of sugar. He wants to make 6 batches of cookies. How much sugar does he need?

6 times , 1 fourth , equals modified under bar with


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Table of Contents

Investigations 3 in Number, Data, and Space®, Student Activity Book Unit 1 Arrays, Factors, and Multiplicative Comparison Unit 2 Generating and Representing Measurement Data Unit 3 Multiple Towers and Cluster Problems Unit 4 Measuring and Classifying Shapes Unit 5 Large Numbers and Landmarks Unit 6 Fraction Cards and Decimal Grids Unit 7 How Many Packages and Groups? Unit 8 Penny Jars and Towers