Lesson 6

Base-Ten Hoppers Again

Est. Class Sessions: 1
X

Mathematical Standards

2.NBT.A
Understand place value. (2.NBT.A.1, 2.NBT.A.2, 2.NBT.A.3)
2.MD.B
Relate addition and subtraction to length. (2.MD.B.6)

Standards for Mathematical Practice

MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP5.
Use appropriate tools strategically.

Students develop flexibility with composing and decomposing numbers. They use moves of ones, tens, and hundreds on number lines to develop mental math skills.

Content in this Lesson

  • Composing and decomposing numbers using ones and tens [E2].
  • Partitioning numbers in tens and ones [E3].
  • Recognizing that different partitions of a number have the same total [E5].
  • Representing three-digit numbers using base-ten pieces, number lines, and symbols [E1].
  • Making connections between place value concepts and representations of numbers (e.g., base-ten pieces, number lines, number sentences, and symbols) [E4].

Daily Practice and Problems S–T

S. Compare

T. Addition Facts Quiz: Group C

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Students

sets of base-ten pieces (21 bits, 20 skinnies, 3–5 flats)

Materials for the Teacher

Display of 200 Chart (Student Activity Book) Reference

Display of Open Number Lines Master (Teacher Guide)

Display of Hop Along pages (Student Activity Book) Page 299–300

Unit 6 Assessment Record

Math Facts Class Record

Display set of base-ten pieces: bits, skinnies, and flats

Assessment in this Lesson

Assessment Expectation Assessed
Make Connections
with Feedback Box
Student Activity Book
Pages 301–302
E1.
Represent 2-digit and 3-digit numbers using base-ten pieces, number lines, and symbols.
E2.
Compose and decompose numbers using ones, tens, and hundreds.
E3.
Show and recognize different partitions of numbers using different representations (base-ten pieces, number lines, number sentences).
E4.
Make connections between place value concepts and representations of numbers (e.g., base-ten pieces, number lines, number sentences, symbols).
DPP Item T
Addition Facts Quiz: Group C
Teacher Guide - digital
E10.
Demonstrate fluency with the addition facts in Group C (1 + 9, 2 + 7, 2 + 8, 2 + 9, 3 + 6, 3 + 7, 3 + 8, 4 + 6, 4 + 7, 5 + 5, 5 + 6) and Group D (3 + 3, 3 + 4, 4 + 4, 4 + 5, 6 + 6, 6 + 7, 7 + 7, 7 + 8, 8 + 8, 10 + 9, 10 + 10).