Lesson 2

Birth Months

Est. Class Sessions: 2
X

Mathematical Standards

2.OA.A
Represent and solve problems involving addition and subtraction. (2.OA.A.1)
2.MD.B
Relate addition and subtraction to length. (2.MD.B.6)
2.MD.C
Work with time and money. (2.MD.C.8)
2.MD.D
Represent and interpret data. (2.MD.D.10)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP4.
Model with mathematics.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP7.
Look for and make use of structure.

Students review the TIMS Laboratory Method (a four-step adaptation of the scientific method) in a teacher-guided investigation of students' birth months. Students collect and represent this information to solve problems.

Content in this Lesson

  • Representing addition and subtraction situations using number sentences [E1].
  • Using addition and subtraction to solve one- and two-step word problems involving situations of join, separate/take away, part-whole, and compare [E3].
  • Collecting and organizing data in a table.
  • Making a bar graph and picture graph to find information about a data set.
  • Reading a table, bar graph, or picture graph to solve problems about a data set [E6].
  • Solving problems using data from a table and graph.
  • Showing a strategy [MPE5].
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Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Book

 Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Students

connecting cubes
desk number line (0–100)
small self-adhesive note

Materials for the Teacher

TIMS Laboratory Method Master (Teacher Guide)
Sample Picture Master (Teacher Guide)
Birth Months Data Table Master (Teacher Guide)
Birth Months Graph Master (Teacher Guide)
Display of the Ten Frames and Number Line Display Master (Teacher Guide), optional
Unit 1 Assessment Record
class number line (0–130) or prepared Number Line Display Masters (Teacher Guide)
chart paper

Materials Preparation

Prepare Birth Months Picture Graph. Make a table on chart paper or the board. See Figure 1. The table should be large enough to fit several small self-adhesive notes across the table to show the number of students who have a birthday in each month. Place a self-adhesive note below the chart as shown in Figure 1.

Prepare Number Line Display. Display a number line where it is easily accessible by both you and the students. Students should be able to see it and touch it with at least a pointer. Use the class number line (0–130) or prepare the Number Line Display Masters. This version can be assembled, laminated, and displayed on the board or on a bulletin board. It is also small enough that it could be moved when it is not needed.

image

Figure 1: Blank Birth Months Picture Graph

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectation Assessed
Ms. Carter's Class
Check-In: Questions 8–12
with Feedback Box
Student Activity Book
Pages 7–8
E1. 
Represent addition and subtraction situations using multiple representations (e.g., stories, drawings, counters, number sentences, number lines, diagrams, ten frames).
E3. 
Use addition and subtraction to solve one- and two-step word problems involving join, separate/take away, part-whole, and compare situations.
E6. 
Read a table, bar graph, or picture graph to solve problems about a data set.
MPE5. 
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.