Lesson 1

A Three Hat Day

Est. Class Sessions: 1
X

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in
solving them.
MP3.
Construct viable arguments and critique the reasoning of others.
MP4.
Model with mathematics.

After hearing the story A Three Hat Day by Laura Geringer, students find the possible number of combinations if three different hats were worn simultaneously in a different order each day.

Content in this Lesson

  • Solving a logic problem (using counters, cubes, symbols, or drawings).
  • Finding an efficient strategy [MPE2].
  • Showing one's work [MPE5].

Daily Practice and Problems A–B

A. Addition Flash Cards: Group C

B. Partition Ten

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books
Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Students

20 connecting cubes in three different colors or other counters with three varying colors or shapes
crayons or colored pencils

Materials for the Teacher

Display of Work Samples Master (Teacher Guide)
Display of Math Practices (Student Activity Book) Reference
Unit 14 Assessment Record
Math Facts Class Record
A Three Hat Day by Laura Geringer
chart paper

Assessment in this Lesson

Assessment Expectation Assessed Math Practices
Expectation Assessed
Three Hat Combinations
with Feedback Box
Student Activity Book
Page 449
MPE2.
Find a strategy. I choose good tools and an efficient strategy for solving the problem.
MPE5.
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.
DPP Item A
Addition Flash Cards: Group C
Teacher Guide - digital
E8.
Demonstrate fluency with the addition facts with sums to ten in Group C (1 + 9, 2 + 7, 2 + 8, 3 + 6, 3 + 7, 4 + 6, 5 + 5).

Vocabulary in this Lesson