Lesson 2

Field Trip

Est. Class Sessions: 2
X

Mathematical Standards

3.NBT.A
Use place value understanding and properties of operations to perform multi-digit arithmetic. (3.NBT.A.2)

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.
MP4.
Model with mathematics.

A trip to the Field Museum in Chicago serves as a context for solving subtraction problems using mental math strategies. Students develop strategies for multidigit subtraction problems in which they decompose numbers and sketch number lines.

Content in this Lesson

  • Composing and decomposing numbers using ones, tens, and hundreds [E1].
  • Solving multidigit subtraction problems using mental math strategies and number lines [E2, E3].
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

desk number line (0–100), optional

Materials for the Teacher

Unit 7 Assessment Record
Math Facts Class Record

Assessment in this Lesson

Assessment Expectation Assessed

Subtraction Strategies
Check-In: Questions 6–7
Student Activity Book
Page 200
E1.
Apply place value concepts to make connections among representations of numbers to the thousands using base-ten pieces, number lines, expanded form, and standard form.
E2.
Represent and solve subtraction problems using base-ten pieces and number lines.
E3.
Subtract multidigit numbers using mental math strategies (composing and decomposing numbers and counting up).