Unit 3

Section A: Making Sense of Division

• Lesson 1: Size of Divisor and Size of Quotient

  Let’s explore quotients of different sizes.

  • Lesson Activities
  • Practice Problems

• Lesson 2: Meanings of Division

  Let’s explore ways to think about division.

  • Lesson Activities
  • Practice Problems

Section B: Dividing Fractions

• Lesson 3: How Many Groups?

  Let’s draw tape diagrams to think about division with fractions.

  • Lesson Activities
  • Practice Problems

• Lesson 4: What Fraction of a Group?

  Let’s think about dividing things into groups when we can’t even make one whole group.

  • Lesson Activities
  • Practice Problems

• Lesson 5: How Much in Each Group? (Part 1)

  Let’s look at division problems that help us find the size of one group.

  • Lesson Activities
  • Practice Problems

• Lesson 6: How Much in Each Group? (Part 2)

  Let’s practice dividing fractions in different situations.

  • Lesson Activities
  • Practice Problems

• Lesson 7: Finding an Algorithm for Dividing Fractions

  Let’s look for patterns when we divide by a fraction.

  • Lesson Activities
  • Practice Problems

• Lesson 8: Ratios and Rates with Fractions

  Let’s calculate some rates with fractions.

  • Lesson Activities
  • Practice Problems

Section C: Fractions in Lengths, Areas, and Volumes

• Lesson 9: Fractional Lengths

  Let’s solve problems about fractional lengths.

  • Lesson Activities
  • Practice Problems

• Lesson 10: Rectangles and Triangles with Fractional Lengths

  Let’s explore rectangles and triangles that have fractional measurements.

  • Lesson Activities
  • Practice Problems

• Lesson 11: Volume of Prisms

  Let’s look at the volume of prisms that have fractional measurements.

  • Lesson Activities
  • Practice Problems
• Optional

  Lesson 12: Solving Problems Involving Fractions

  Let’s add, subtract, multiply, and divide fractions.

  • Lesson Activities
  • Practice Problems

Section D: Warming Up to Decimals

• Lesson 13: Using Decimals in a Shopping Context

  Let’s use what we know about decimals to make shopping decisions.

  • Lesson Activities
  • Practice Problems

• Lesson 14: Do the Zeros Matter?

  Let’s represent addition and subtraction of decimals.

  • Lesson Activities
  • Practice Problems

• Lesson 15: Adding and Subtracting Decimals

  Let’s add and subtract decimals.

  • Lesson Activities
  • Practice Problems

• Lesson 16: Methods for Multiplying Decimals

  Let’s look at some ways we can represent multiplication of decimals.

  • Lesson Activities
  • Practice Problems

• Lesson 17: Calculating Products of Decimals

  Let’s multiply decimals.

  • Lesson Activities
  • Practice Problems

Section E: Dividing Decimals

• Lesson 18: Using Long Division

  Let’s divide whole numbers.

  • Lesson Activities
  • Practice Problems

• Lesson 19: Dividing Numbers that Result in Decimals

  Let’s find quotients that are not whole numbers.

  • Lesson Activities
  • Practice Problems

• Lesson 20: Dividing Decimals by Decimals

  Let’s divide decimals by decimals.

  • Lesson Activities
  • Practice Problems

• Lesson 21: Using Operations on Decimals to Solve Problems

  Let’s solve some problems using decimals.

  • Lesson Activities
  • Practice Problems

Section F: Let’s Put It to Work

• Optional

  Lesson 22: Fitting Boxes into Boxes

  Let’s use what we learned about fractions to find shipping costs.

  • Lesson Activities
• Optional

  Lesson 23: Making and Measuring Boxes

  Let’s use what we know about decimals to make and measure boxes.

  • Lesson Activities