Area Problems

Est. Class Sessions: 2

Mathematical Standards

5.NBT.B: Perform operations with multidigit whole numbers and with decimals to hundredths. (5.NBT.B.5, 5.NBT.B.6)
5.MD.C: Geometric measurement: understand concepts of volume. (5.MD.C.3, 5.MD.C.4, 5.MD.C.5)

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.
MP5.: Use appropriate tools strategically.
MP7.: Look for and make use of structure.

Students discover and compare strategies for finding areas of rectangles and other geometric figures with straight sides. They solve multistep area problems using addition, subtraction, multiplication, and division.

Content in this Lesson

Using multiplication and division strategies to find the area of rectangles or shapes based on rectangles [E8].
Solving multistep problems using addition, subtraction, multiplication, and division [E7].
Finding a strategy for solving area problems [MPE2].
Explaining solution strategies [MPE5].
Using labels to show what numbers mean [MPE6].

Daily Practice and Problems Q–T

Q. Car Wash

R. Finding Area

S. Using Rectangles to Multiply

T. Tara's Cats

Materials for Students

		Daily Practice and Problems	Lesson	Homework	Assessment
Student Books	Student Guide		Area Problems Pages 186–187	Area Problems Homework section Page 188
Student Books	Student Activity Book		Strategies to Find Area Pages 167–171 Cut and Paste Puzzles Pages 173–175		Strategies to Find Area Check-In: Q# 5 Pages 170–171
Teacher Resources	Teacher Guide - digital	DPP Item Q DPP Item R DPP Item S DPP Item T	Centimeter Grid Paper Super Challenge: Cut and Paste Puzzle optional	Centimeter Grid Paper 2 per student Home Practice Part 6

Supplies for Students

centimeter ruler
calculator
scissors
glue stick
square-inch tiles, optional

Materials for the Teacher

Display of Strategies to Find Area (Student Activity Book) Pages 167–171
Display of Centimeter Grid Paper Master (Teacher Guide)
Unit 4 Assessment Record

Assessment in this Lesson

Assessment	Expectation Assessed	Math Practices Expectation Assessed
Strategies to Find Area Check-In: Question 5 with Feedback Box Student Activity Book Pages 170–171	E7. Solve multistep problems using addition, subtraction, multiplication, and division. E8. Use multiplication and division strategies to find the area of rectangles or shapes based on rectangles.	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. MPE6. Use labels. I use labels to show what numbers mean.