Lesson 7

Decimal Hoppers

Est. Class Sessions: 2
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Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP5.
Use appropriate tools strategically.

Students explore addition and subtraction of decimals using decimal hoppers, a type of number hopper that incorporates decimal fractions. Students play a game involving decimal hoppers to build strategies for composing, decomposing, adding, and subtracting decimals. Using the number line model, mental math, and estimation strategies, students solve problems involving addition and subtraction of decimals to the hundredths.

Content in this Lesson

  • Composing and decomposing decimal numbers using number lines [E9].
  • Adding and subtracting decimal numbers using models [E9].
  • Estimating sums and differences involving decimals [E9].
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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

a paper clip

Materials for the Teacher

Display of Start, Hop, Stop! Spinners (Student Activity Book) Page 457
Display of Start, Hop, Stop! Game Board (Student Activity Book) Page 459–460
Unit 10 Assessment Record
Individual Assessment Record
Math Facts Class Record

Assessment in this Lesson

Assessment Expectation Assessed

Decimal Hoppers
Check-In: Questions 12–13
Student Guide Page 486
E9.
Add and subtract decimals to the hundredths using models.

DPP Item W
Division Quiz: Last Six Facts
Teacher Guide - digital
E10.
Demonstrate fluency with the division facts related to the last six multiplication facts (24 ÷ 4, 24 ÷ 6, 28 ÷ 4, 28 ÷ 7, 32 ÷ 4, 32 ÷ 8, 42 ÷ 6, 42 ÷ 7, 48 ÷ 6, 48 ÷ 8, 56 ÷ 7, 56 ÷ 8).

Vocabulary in this Lesson