User login


Bend That Bar


Source Institutions

    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder

Add to listGo to activity
Bend That Bar

Learners play the role of materials engineers as they test the flexibility of different materials. They determine the strength-to-weight ratio of bars of these materials (e.g., steel, aluminum, wood, etc.) and discuss the advantages to using each in different scenarios. This activity can serve as a demonstration for younger students.

Quick Guide


Preparation Time:
5 to 10 minutes

Learning Time:
45 to 60 minutes

Estimated Materials Cost:
$5 - $10 per group of students

Age Range:
Ages 11 - 14

Resource Types:
Activity, Demonstration, Experiment/Lab Activity

Language:
English

Materials List (per group of students)


  • Bend that Bar Worksheets (one for each student)
  • A spring scale (optional), or groups take turns if fewer are available
  • 1 bar 15"-18" (38-46 cm) in length and 1/8"-1/4" (3-6 mm) in diameter of each of the following: steel, aluminum, wood, plastic (if available), brass (if available), copper (if available)
  • 1 Sharpie┬« or marker/pens to write on the bars
  • Yard/meter stick
  • Calculator (optional)
  • Bathroom or top-loading scale to weigh individual bars

Subjects


  • Engineering and Technology
    • Engineering
      • Architectural Engineering
      • Metallurgy and Materials Engineering
    • Technology
      • Manufacturing
  • Mathematics
    • Data Analysis and Probability
      • Data Analysis
      • Data Collection
    • Measurement
  • Physical Sciences
    • Motion and Forces
    • Structure and Properties of Matter
      • Mass and Weight

Audience


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


Includes alignment to state and/or national standards

This resource is part of:

Access Rights:

  • Free access

By:

  • Rutkowski, Tom; Conner, Alex; Hill, Geoffrey; Schaefer Zarske, Malinda; Yowell, Janet

Source Collection:

  • TeachEngineering

Rights:

  • All Rights Reserved, Regents of the University of Colorado, ©2004

Funding Sources:

  • National Science Foundation, 0226322
  • Fund for the Improvement of Postsecondary Education (FIPSE)
  • U.S. Department of Education

Share


User Lists


This resource is part of these lists: