TENNESSEE LESSON PLAN BUILDER

 

Lesson Title:                                                                                                                 
                                     SIMPLE MACHINES:  LESSON 1 OF 7

LESSON OVERVIEW

This is an introductory lesson for a unit on work and simple machines.

INSTRUCTIONAL GOALS

Students will explain the meaning of work.

Students will explain how work and energy are related.

Students will explain how machines make work easier.

Students will explore the difference between a simple and compound machine.

Students will calculate work, power, mechanical advantage, and efficiency.

 

 TN STANDARDS

Standard Number: 1.0 Force and Motion.

 SPI identify simple machines, given illustrations of machines in action.

 SPI recognize the simple machines found in a compound machine, given an illustration of a machine in

      action.

 

FORMATIVE ASSESSMENT

Verbal responses and written responses by students.

LESSON ORGANIZATION

Opening the Lesson:
_10_ minutes

Use Think, Pair, Share to have students list on paper as many machines as they can think of in 2 minutes.  After time is up, have students share with the class their lists, writing them on the board or overhead.

Developing the Lesson:
_30_ minutes

Remind students about information previously learned concerning force and energy.

Teach definitions of work, machine, and simple machine.  Have students read information in textbook on pages 126 -137.and answer study questions.  Use power point presentation to reinforce content-learning.  (See resources list)

 

Closing the Lesson:
_5_ minutes

Refer to list of machines generated at beginning of class.  Ask them to tell what simple machines are “inside” the compound machines in their list.  Discuss how compound machines are made up of simple machines. Tell them they will learn about six simple machines in the next lesson.

TEACHING RESOURCES

Textbook: Physical Science by Glencoe McGraw Hill, copyright, 2002

Power Point Presentation:  Simple Machines by Morris Reed

Study Guide:  Machines, lesson one

LAB SAFETY

No concerns

ACCOMMODATIONS FOR SPECIAL LEARNERS

For students with limited reading ability, the text may have to be read to them by another student.

ENRICHMENT ACTIVITIES

Ask students to look around their home and make a list of the simple and compound machines  in use by their family.
 
         

 

Study Guide, Chapter 5                                                                                               Name: ___________________________

  

Simple Machines

 

Section 1:

  1. What is the scientific definition for work?
  2. What 2 things must occur for work to be done on an object?
  3. How are work and energy related?
  4. What are the 2 things that determine the amount of work being done and what formula is used to show this?
  5. What is power?
  6. How can you calculate power?
  7. What unit is used to measure power?

 

Section 2:

 

  1. What is the definition of a machine?
  2. An automobile jack is a simple machine that increases which, force or distance?
  3. Pushing an object up a ramp uses less force than lifting it straight up.  Why?
  4. When you split wood using an ax, how is the direction of the force applied changed?
  5. What is effort force?      Give an example.
  6. What is resistance force?     Give an example.
  7. What 2 kinds of work occur when you use a machine?
  8. Is all of the energy you apply to a machine transferred to the object that you are working on or trying to move?     Why?
  9. What is mechanical advantage?    Give an example.
  10. What is meant by efficiency of a machine?

 

Section 3:

 

  1. What is a simple machine?
  2. What are the 6 types of simple machines?
  3. What is a lever?
  4. What is a fulcrum?
  5. What is an effort arm?
  6. What is a resistance arm?
  7. What are the 3 types of levers?   Give a definition and an example of each type.
  8. How does a movable pulley help you lift a weight more efficiently than a fixed pulley?
  9. What is a block and tackle?
  10. What is a wheel and axle, and how does the size of the wheel affect the mechanical advantage of a wheel and axle?
  11. What is an inclined plane and how does it make it easier to lift a heavy object than it would be to lift the object straight up without the plane?
  12.  How is a screw an inclined plane?
  13. What is a wedge, and how does it work?
  14. What is a compound machine?     Give and example.