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Levers

Unit:
Discrepant Design: Levers in the Body
Topic: Levers in the Human Body

 

Rationale: Students will observe how muscles and bones work together to move joints and investigate lever systems in the human body.

Keywords: bone, class, contract, effort, extension, flexion, force, fulcrum, joint, lever, move, movement, muscle, nerve, opposable, percentage, pull, resistance, system

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Lessons & Activities | Objectives | Evaluation | Funding

see what students think of this activity
view pre/post test results

 

Lesson 1: Puppet on a String : An Engaging Look at Movement
 
Lesson 2: Just a little Bit of Effort: Exploring Levers
 
Lesson 3: Levers in the Body: They Are Not What You Might Think!

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Unit Objectives

  • Observe how muscles and bones work together to move joints
  • Observe that joints are operated by opposable muscles
  • Distinguish between joint flexion and extension
  • Observe that muscles can work only by pulling (contracting)
  • Name and define the parts of a lever
  • Describe the location of the fulcrum, effort and resistance in each class of lever
  • Investigate the forces involved in each class of lever
  • Draw conclusions regarding appropriate application of each class of lever Investigate lever systems in the human body
  • Observe how muscles and bones work together to move joints
  • Observe that joints are operated by opposable muscles
  • Distinguish between joint flexion and extension
  • Observe that muscles can work only by pulling (contracting)
  • Explain that experts do not agree on classification of some joints as specific classes of levers

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Unit/Lesson Evaluation

Discrepant Design Pre/Post Test

Discrepant Design Pre/Post Test Answer Sheet & Key

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Funding

NCRR SEPA

Positively Aging® Curriculum Program Funding 1997-2008:
National Institutes of Health
National Center for Research Resources
National Institute on Aging
Science Education Partnership Award
Grant # R25 RR 18549

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UTHSCSA Teacher Enrichment Initiatives
Positively Aging® & M.O.R.E. Curricular Programs
2007-2008 © The University of Texas Health Science Center at San Antonio
Homepage: http://teachhealthk-12.uthscsa.edu