Day 4 - Calculations:  Using Formulas and Algebraic Solutions                           

LESSON OVERVIEW

Students will apply use of formulas and equation solving techniques to solve real world problems dealing with Newton’s 2nd Law of Motion.

INSTRUCTIONAL GOALS

 Students will perform the required calculations to find the following data needed to continue the Science portion of this lesson.  Data required is as follows:  Average elapsed time for each item; rate of speed for each item; calculate the approximate final velocity for each item; and calculate the force of gravity applied to each item

 

 TN STANDARDS

2.6     Apply the concept of variable in simplifying algebraic expressions, solving equations, and solving inequalities.                                              

1.10 Select and apply an appropriate method (i.e., mental arithmetic, paper and pencil, or technology) for computing with real numbers, and    evaluate the reasonableness of results.

4.5 Demonstrate an understanding of rates and other derived and indirect measurements (e.g., velocity, miles per hr. and cost per unit)

 

FORMATIVE ASSESSMENT

Students will be graded on the proper use of equation solving techniques, showing all required work per instructions given during introduction, and completion of all assigned data collection.

LESSON ORGANIZATION

Opening the Lesson:

       10 minutes

Provide and discuss the use of the formulas needed to find the required data (Average Time Table 1). This data needs to be found in the order given, so that the data needed to solve the next formula will be available.

Developing the Lesson:
35  minutes
  1. Use the average formula to find the average elapsed time for each item dropped. Eliminate the high and low time from each object and then calculate each average time.
  2. Use d = r x t for rate of speed. Use distance provided from the Science Lab and the average time computed in step 1to find the rate of speed for each object.
  3. Use r x 2 = Vf.. This will be an approximation of Vf   that can be used in the acceleration formula.
  4. Use A = (Vf – Vi) divided by t for force of gravity at Jefferson County high school.

Closing the Lesson:   

                  5  minutes

Students will turn in all work for grading and collection for the next Science lesson.

TEACHING RESOURCES

Timing data collected during the Science Lab portion of the lesson, calculators, data collection form Average Time Table 1, pencil and paper.

LAB SAFETY

No safety concerns.

ACCOMMODATIONS FOR SPECIAL LEARNERS

Special Ed and ESL students may be required to only perform 50% of the calculations required by all other students.