|
TENNESSEE LESSON PLAN BUILDER+ |
||
|
Lesson Title: Formula for calculations using Simple Machines: LESSON 4 of 7 |
||
|
This lesson teaches the math skills needed to support the use of the formulas in the unit on simple machines. |
||
|
INSTRUCTIONAL GOALS |
Students will solve simple one-step equations. Students will substitute values for known variables into a formula and solve for an unknown variable. |
|
|
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.
|
||
|
FORMATIVE ASSESSMENT |
Working in cooperative learning groups, students will solve problems involving work, force, power, and mechanical advantage. |
|
|
LESSON ORGANIZATION |
Opening the
Lesson: |
Use a formula that the students are familiar with such as distance = rate x time to introduce the lesson. Ask questions such as “If I drive my car for three hours at 50 mph, how far would I travel?” and “If I travel 350 miles at 50 mph, how may hours will I need to allow for travel time?” Use distances to nearby towns and times needed to travel to illustrate how the formula helps us find distance, time and rate (speed). Review how to solve one-step equations, if needed. |
|
Developing the
Lesson: |
Give students a list of the formulas needed to do problems related to work and simple machines. Do at least one example of each, discussing the meaning of the various “units” used in these formulas. Group class into cooperative learning groups of 3 or 4 students. Each group will receive a worksheet of problems using the formulas in this unit. Each group will also receive three “tokens”. Each token is worth one answer from the teacher to a question from the group. When a group asks a question, the teacher gives an answer and takes a token. This limits the group to asking no more than three questions to help them with the assignment. This is to encourage them to ask only difficult questions, not trivial ones. It also helps them use each other as a resource. ( Every student in the group must answer the problems on his/her individual worksheet.)
If computers are in the classroom, groups who finish early may explore the web sites listed in the resources for this lesson. |
|
|
Closing the
Lesson: |
From each group, randomly select one paper. Since students should have collaborated on their work, you may grade this one paper for an assessment on the entire group. |
|
|
TEACHING RESOURCES |
Textbook: Physical Science by Glencoe McGraw Hill, copyright, 2002 List of Formulas and Worksheet of Practice Problems (Teacher made) Web Sites for Practice: |
|
|
LAB SAFETY |
No concerns |
|
|
ACCOMMODATIONS FOR SPECIAL LEARNERS |
When assigning groups, be sure to “pair” special learners with students capable of being a peer tutor. |
|
|
ENRICHMENT ACTIVITIES |
Invite someone who uses these types of formulas in their work (such as an electrician) to talk to the class about the importance of formulas in the work place. |
|
