TENNESSEE SCIENCE UNIT

UNIT TITLE

Simple Machines

AUTHOR(S)

Morris Reed, Pat Wilder

COURSE/

Physical Science,  Algebra I  -  grade level nine

CONTENT AREA

Force and Motion

TOPIC

Simple Machines

TIME FRAME

Seven 50 minute periods

NUMBER OF LESSONS

Seven

TARGETED TENNESSEE

STANDARDS/
LEARNING EXPECTATIONS

Standard Number: 1.0 Force and Motion.

1.4 demonstrate the relationship among work, power, and machines.

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.

SPI solve application problems related to mechanical advantage and the efficiency of simple machines, given appropriate equations.

Standard 2.0:  Algebra

Students will describe, extend, analyze, and create a wide variety of patterns and functions using appropriate materials and representations in real world problem solving.

Learning Expectations:

The student will:

2.3  solve linear systems using a variety of techniques;

2.4  communicate the meaning of variables in algebraic expressions, equations, and inequalities;

2.8  interpret results of algebraic procedures;

2.9  apply the concept of variable in simplifying algebraic expressions, solving equations, and solving inequalities;

Standard Number: 1.0 Force and Motion

Standard:

The student will explore the concepts of force and motion.

SPI solve application problems related to velocity, acceleration, force, work, and power using appropriate units of measurement, given the equations.

TPI gather and analyze data to solve problems related to velocity, acceleration, force, work, and power, given the equations v=d/t, a=∆v/t, F=ma, W=Fd, and P=W/t.

SPI solve application problems related to mechanical advantage and the efficiency of simple machines, given appropriate equations.

TPI gather and analyze data and solve problems related to mechanical advantage and efficiency of simple machines, given the equations, MA=FO/FI and Eff=WO/WI.

SUMMARY OF PERFORMANCE ASSESSMENT

Students will demonstrate knowledge of the six simple machines and the forces they affect.

###### OVERVIEW OF STUDENT LEARNING ACTIVITIES

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

This lesson uses a 15 minute video to introduce the simple machines lever, wheel and axle, and pulley. The lesson discusses the first three simple machines, including examples of each, and discusses the resistance forces each overcomes, including the meaning and calculation method for determining mechanical advantage.

This lesson uses a 15 minute video to introduce the simple machines inclined plane, screw, and wedge.

This lesson discusses the last three simple machines, the inclined plane, the screw, and the wedge, including examples of each, and discussing the resistance forces each overcomes.

This lesson teaches the math skills needed to support the use of the formulas in the unit on simple machines.

This lesson involves having the student, working in small groups, complete a hands-on lab demonstrating knowledge of the simple machines inclined plane, pulley, wheel and axle, and the lever.  The student will also be shown compound machines or pictures of compound machines to identify simple machines that these machines include.

Lab Activities for Simple Machines

This lesson is a web quest entitled “Tools and Prehistoric Man”

This lesson involves the assessment activity in the form of a chapter test to be administered to the students.

Enter Learning Cycle stage here.

Enter lesson 7 title here.