Lesson 1

The TIMS Candy Company

Est. Class Sessions: 2
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Mathematical Standards

4.NBT.A
Generalize place value understanding for multi-digit whole numbers. (4.NBT.A.1, 4.NBT.A.2, 4.NBT.A.3)
4.NBT.B
Use place value understanding and properties of operations to perform multi-digit arithmetic.(4.NBT.B.4, 4.NBT.B.5)
4.OA.A
Use the four operations with whole numbers to solve problems. (4.OA.A.3)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP4.
Model with mathematics.
MP7.
Look for and make sense of structure.

To review place value, students use base-ten pieces to keep track of how much candy is made at the TIMS Candy Company. Students practice trading pieces and expressing equivalent amounts in different ways. Students use base-ten shorthand to help them develop pictorial representations of the base-ten system, with the goal of bridging concrete and symbolic representations. Students review the Fewest Pieces Rule.

Content in this Lesson

  • Developing number sense for large numbers [E11].
  • Using place value concepts to make connections among representations of numbers in the thousands (base-ten pieces, expanded form, and standard form) [E2, E3, E4, E5, E6, E7].
  • Showing partitions of numbers using base-ten pieces and number sentences (e.g., 237 = 200 + 30 + 7) [E1].
  • Recognizing that different partitions of the same number are equal (e.g., 200 + 30 + 7 = 200 + 20 + 17) [E1].
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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 Student Pairs

set of base-ten pieces—2 packs, 14 flats, 30 skinnies, 50 bits
storage container—plastic bag, boxes, or shoe boxes, optional
clear plastic spinner or pencil and paper clip, optional

Materials for the Teacher

Display of Base-Ten Recording Sheet Master (Teacher Guide)
Unit 4 Assessment Record
Math Facts Class Record
Display set of base-ten pieces, optional

Materials Preparation

Base-Ten Recording Sheet. Make at least four copies of the Base-Ten Recording Sheet Master for each student. To save paper, make the copies double-sided.

Triangle Flash Cards. Prepare copies of the Triangle Flash Cards on heavier paper or card stock. Have students cut apart each set and store them in an envelope. You may want to provide each student with two sets, one to use at school and one to take home.

Assessment in this Lesson

Assessment Expectation Assessed
Class Discussion
Part 1
Teacher Guide - digital
E1.
Show that different partitions of the same number are equal using base-ten pieces, number lines, and number sentences (e.g., 200 + 30 + 7 = 200 + 20 + 17).
More Base-Ten Shorthand
Check-In: Questions 1–2
Student Activity Book
Pages 91–93
E1.
Show that different partitions of the same number are equal using base-ten pieces, number lines, and number sentences (e.g., 200 + 30 + 7 = 200 + 20 + 17).
DPP Item A
Triangle Flash Cards 2s, 3s, and 9s
Teacher Guide - digital
E12.
Demonstrate fluency with the multiplication facts for the 2s, 3s, and 9s.