Lesson 3

Many Ways to Show a Decimal

Est. Class Sessions: 1–2
X

Mathematical Standards

4.NF.C
Understand decimal notation for fractions, and compare decimal fractions. (4.NF.C.5, 4.NF.C.6, 4.NF.C.7)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP7.
Look for and make sense of structure.

In Part 1, the class describes parts of a group of ten students using decimals as they play Kid Decimals. In Part 2, students represent decimal fractions using fraction circle pieces and connect the decimals to common fractions. In Part 3, students represent decimal fractions in five different ways using decimals, common fractions, words, drawings, and number lines.

Content in this Lesson

  • Representing decimals using fraction circle pieces, number lines, and drawings [E5].
  • Representing parts of collections of discrete objects with decimals [E7].
  • Using words and numbers to read and write decimals to the tenths [E6].
  • Making connections among representations of decimals including symbols, words, area models, base-ten pieces, and number lines [E7].
  • Comparing and ordering decimals to the tenths using models [E8].

Daily Practice and Problems I–J

I. Dividing It Up

J. Which Length Is Longer?

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

Student Guide
Student Activity Book

Teacher Resources

Teacher Guide - digital

Supplies for Students

fraction circle pieces: red, pink, green, purple

Materials for the Teacher

Display of Kid Decimals Chart Master (Teacher Guide) optional
Display of Show That Decimal Fraction Master (Teacher Guide)
Unit 10 Assessment Record
Display set of fraction circle pieces

Materials Preparation

Prepare Display Chart. Prepare the Kid Decimals Chart Master for display or draw a table on chart paper. Use the headings shown in Figure 1. Leave the rows blank. The entry in the table in Figure 1 is an example of a possible entry from a class discussion that takes place in Part 1 of the lesson.

Figure 1
Figure 1: Class chart for Kid Decimals

Assessment in this Lesson

Assessment Expectation Assessed

Showing Decimals
Check-In: Questions 19–21
with Feedback Box
Student Activity Book
Page 417–418

E5.
Represent decimals using area models, number lines, and base-ten pieces.
E6.
Use words and numbers to read and write decimals to the hundredths.
E7.
Make connections among representations of decimals including symbols, words, area models, base-ten pieces, and number lines.
E8.
Compare and order decimals to the hundredths using models.

Vocabulary in this Lesson