Lesson Planet
Search educational resources
  • Sign In Try It Free
  • AI Teacher Tools
    • Discover Resources Search reviewed educational resources by keyword, subject, grade, type, and more
    • Curriculum Manager (My Content) Manage saved and uploaded resources and folders To Access the Curriculum Manager Sign In or Join Now
    • Browse Resource Directory Browse educational resources by subject and topic
    • Curriculum Calendar Explore curriculum resources by date
    • Lesson Planning Articles Timely and inspiring teaching ideas that you can apply in your classroom
    • Our Story
    • Frequently Asked Questions
    • Testimonials
    • Contact Us
  • Pricing
  • School Access
    • Your school or district can sign up for Lesson Planet — with no cost to teachers
      Learn More
  • Sign In
  • Try It Free

Hi, what do you want to do?

Create a lesson plan
Create a lesson plan
Generate resources with 80+ AI teacher tools
Generate resources with 80+ AI teacher tools
Search 200,000 instructional videos
Search 200,000 instructional videos
Find a teaching resource
Find a teaching resource
Fermi Length AssessmentFermi Length Assessment
Publisher
Balanced Assessment
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
9th - 12th
Subjects
Math
1 more...
Resource Types
Assessments
6 more...
Audiences
For Teacher Use
1 more...
Duration
1 hr
Instructional Strategy
Independent Practice
Year
2002
Usage Permissions
Fine Print
Assessment

Fermi Length

Curated and Reviewed by Lesson Planet
This Fermi Length assessment also includes:
  • Solutions
  • Student Reference
  • Join to access all included materials

How long does it take to get to the end of a toilet paper roll? Pupils use their estimation strategies to find lengths of common items. For example, knowing the area of a roll of toilet paper, scholars determine the length of the full roll.

3 Views 2 Downloads
CCSS: Adaptable

Concepts

length, area, diameter, unit conversions

Additional Tags

math

Instructional Ideas

  • Bring in rolls of toilet paper, a VHS tape, and pennies to use as reference

Classroom Considerations

  • Having access to the Internet is helpful during the activity
  • Your classes should have experience with unit conversions

Pros

  • Questions require research and higher order thinking
  • Encourages multiple approaches to solving problems
  • Resource downloads as an editable copy

Cons

  • Only includes a partial answer key

Common Core

HSN-Q.A.1

See similar resources:

Assessment

Boring a Bead

Balanced Assessment
How much material is in a bead? Class members utilize volume formulas to determine the amount of material in a bead. The goal of the assessment is to show that the amount of material left in a bead is the same for all beads with a...
11th - 12th Math
CCSS: Adaptable
Lesson Plan

Unknown Length and Area Problems

EngageNY
What is an annulus? Pupils first learn about how to create an annulus, then consider how to find the area of such shapes. They then complete a problem set on arc length and areas of sectors.
9th - 10th Math
CCSS: Designed
Lesson Plan

Arc Length Lesson

Curated OER
Students find the length of the arc of a circle. In this geometry lesson plan, students calculate the length of an arc and find the measure of the central angle given the length of the arc. They convert between linear and angular speed....
9th - 11th Math
Lesson Plan

Toilet Roll

Illustrative Mathematics
Potty humor is always a big hit with the school-age crowd, and potty algebra takes this topic to a whole new level. Here the class develops a model that connects the dimensions (radii, paper thickness, and length of paper) of a...
9th - 11th Math
CCSS: Designed
Lesson Plan

Two Wheels and a Belt

Illustrative Mathematics
Geometry gets an engineering treatment in an exercise involving a belt wrapped around two wheels of different dimensions. Along with the wheels, this belt problem connects concepts of right triangles, tangent lines, arc length, and...
9th - 10th Math
CCSS: Designed
Activity

Toilet Paper Roll

101 Questions
You won't want to flush a great lesson down the drain! An intriguing resource asks learners to predict the number of sheets of toilet paper on a roll. Presented with the dimensions of the roll and one sheet of paper, scholars make...
9th - 12th Math
CCSS: Designed
Interactive

Lengths of Sides in Isosceles Right Triangles: Paper Football

CK-12 Foundation
Fuse sports and geometry by having your class create paper footballs—that are actually isosceles right triangles! Scholars use an interactive to create an isosceles right triangle to model a paper football. From the information in the...
9th - 12th Math
CCSS: Designed
Lesson Plan

Radians: Just Another Way

Alabama Learning Exchange
Serve up angle measurements on paper plates. Pupils use paper plates and paper-folding techniques to create a unit circle with conversions for special angles. Using their plates, learners explore the relationship between angle...
9th - 12th Math
CCSS: Designed
Lesson Plan

Illustrative Mathematics: G Mg Toilet Roll

Illustrative Mathematics
Picture a roll of toilet paper; assume that the paper in the roll is very tightly rolled. Assuming that the paper in the roll is very thin, find a relationship between the thickness of the paper, the inner and outer radii of the roll,...
9th - 10th Math
CCSS: Designed
Worksheet

A Cardioid for Valentine’s Day

Yummy Math
It's Valentine's Day in geometry class! Celebrate the day of love with a heart-themed activity in which young mathematicians create a cardioid on polar graph paper.
7th - 12th Math
CCSS: Adaptable
Try It Free
© 1999-2026 Learning Explorer, Inc.
Teacher Lesson Plans, Worksheets and Resources

Sign up for the Lesson Planet Monthly Newsletter

Open Educational Resources (OER)

  • Health
  • Language Arts
  • Languages
  • Math
  • Physical Education
  • Science
  • Social Studies
  • Special Education
  • Visual and Performing Arts
View All Lesson Plans

Discover Resources

  • Our Review Process
  • How it Works
  • How to Search
  • Create a Collection

Manage Curriculum

  • Edit a Collection
  • Assign to Students
  • Manage My Content
Contact Us Site Map Privacy Policy Terms of Use