Lesson 6

How Close Is Close Enough

Est. Class Sessions: 1–2
X

Standards for Mathematical Practice

MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP4.
Model with mathematics.
MP7.
Look for and make use of structure.
MP8.
Look for and express regularity in repeated reasoning.

Students estimate the area of irregular shapes by counting square centimeters. The class decides which estimates are “close enough” by finding the median estimate and deciding which estimates are within a reasonable range of the median. The notion of “closeness” is related to the magnitude of the area. Students apply these skills as they solve problems.

Content in this Lesson

  • Averaging: finding the median of a data set [E13].
  • Estimating the area of shapes with curved sides [E9].

Daily Practice and Problems Q–R

Q. Division

R. Volume

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

Student Guide
Student Activity Book

Teacher Resources

Teacher Guide - digital

Materials for the Teacher

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectation Assessed

How Close Is Close Enough
Check-In: Questions 8–9
Student Guide
Page 338
with the corresponding
Feedback Box
Teacher Guide - digital

E13.
Find the median of a data set.
MPE5.
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.

Vocabulary in this Lesson