CONCEPT: Work involves the movement of objects through a distance.
CONTENT OBJECTIVE: 1A2.00 To understand work and explain the kinds of motion used in doing work
INSTRUCTIONAL OBJECTIVES: The learner will:
2.01 observe and describe examples of work.
2.02 describe the relationship of work to force.
2.03 classify forces as pushing, pulling or lifting.
OUTLINE OF CONTENT:
I. Work
II. Force
A. Pushing
B. Pulling
C. Lifting
TN COMPONENT OF SCIENCE: Unifying Concepts of Science
TN GOAL:
To enable students to acquire scientific knowledge by applying concepts, theories, principles and laws from life/environmental, physical, and earth/space science.
TN THEME:
2.4 INTERACTIONS - At all levels of living and non-living systems, matter and energy act and react to determine the nature of our environment.
TN STANDARD(S): The learner will understand that:
2.4a Interactions occur on scales ranging from elementary particles to galaxies.
BENCHMARK Sometimes changing one thing may cause changes in something else. If changes occur in the same manner, similar results may be expected.
CLASSROOM CONNECTOR
MATERIALS:
Scissors, magazines for pictures, colors, posters about work
SET:
What type of work have you done today? (pause) Did you need energy to do your work? (pause) Today we are going to study how work is done.
INSTRUCTION:
(Discuss the terms WORK, FORCE, and ENERGY. Have the students describe these terms in their own words.) Work is the amount of energy used to move an object. (Have two students demonstrate this definition of work by moving objects.) Force is a push or pull. Force is needed to move an object and to do work. Force is anything that causes something to move. (Show the students pictures of people doing different kinds of work. Have each student to select one picture and describe the work used in the picture.)
REINFORCEMENT/SUPERVISED PRACTICE:
(Make cards with different kinds of work. Put the cards in a box and have the children draw out a card. Each child can select another child to help him act out the type of work. Examples: one picks up a pencil, rolls a pencil across the desk, or stands up. Do the hands or legs push, pull or lift?)
CLOSURE:
What did we discuss today? (response) (Yes, we discussed work, energy and force) Now class, who can tell me what these terms mean? (Work is the amount of energy used to move an object. Force is a push or pull. Energy gives us power to move an object.) Turn to your neighbor and tell him/her one kind of work you can do. (pause, then summarize)
INDEPENDENT PRACTICE:
(Have the children draw a picture and cut out a picture showing work. Each student will show his/her picture and describe the work being done.)
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