You are a member of the fifth year team that is going to rehearse a cheer dance for the upcoming ANHS Sports fest in LSGH on Saturday. Your meeting time is at exactly one o’clock in the afternoon. It was reported that on that day, there will be some renovations to be done on both EDSA and Ortigas Avenue. Motorists were advised that the expected vehicle speed on the affected areas of EDSA and Ortigas Avenue will be 15 kph and 18 kph respectively. Your teammates Inday and Dodong, who will be affected by the road renovations, asked you to estimate the time they should leave their house on Saturday. What factors will you consider in responding?

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What factor/s will you consider in estimating the time Inday and Dodong need to leave their house? Put a check mark on your choice/s. If you have another factor in mind, write

it inside the rectangle labeled “Other Factor”. Be ready to explain your choice/s.

FACTORS

TO

CONSIDER

Distance from their house to

LSGH

Displacement from their house to

LSGH

Expected vehicle speed on EDSA/Ortigas Avenue

Meeting time at LSGH

Other Factor:

____________________________

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THINKING ABOUT YOUR CHOICES!

Did you choose DISTANCE FROM THEIR HOUSE TO LSGH? How do you think it will affect the time Inday and Dodong should leave their house?

_______________________________________________________________________________________________________________________________________

Did you choose DISPLACEMENT FROM THEIR HOUSE TO LSGH? How do you think it will affect the time Inday and Dodong should leave their house?

________________________________________________________________________________________________________________________________________________

Did you choose EXPECTED VEHICLE SPEED ON EDSA/ORTIGAS AVENUE? How do you think it will affect the time Inday and Dodong should leave their house?

________________________________________________________________________________________________________________________

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THINKING ABOUT YOUR CHOICES!

Did you choose MEETING TIME AT LSGH? How do you think it will affect the time Inday and Dodong should leave their house?

_________________________________________________________________________________________________________________________________________________________

Did you choose OTHER FACTOR? What is this factor?

________________________________________________________________________

How do you think this factor will affect the time Inday and Dodong should leave their house?

_____________________________________________________________________________________________________________________________________________________________________________________________

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Now, for us to be able to clarify our ideas, let us view The Physics Classroom and carefully study the content of the page. This high school Physics tutorial website describes both speed and velocity and provides some examples on how to solve for these quantities.

According to what you have read, what are the characteristics of speed and velocity? Use the Venn Diagram below in identifying their similarities and differences.

SpeedBoth

Velocity

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Let us further discuss speed and velocity focusing on their formulas. Carefully study this Regentsprep.Org page. This website will help us identify the quantities involved in solving speed and velocity including their symbols.

Now, form a group with three members. Together, try filling up the table on the next page with the right formulas. The table will be our guide in answering problems that involve speed and velocity in the future. Feel free to go back to the website if you need to. Be ready to discuss your answers with the class afterwards.

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Quantity Looking For Symbol

BasicFormula

Speed

Speed

Distance

Time

Velocity

Velocity

Displacement

Time

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GUIDED PRACTICE

Let us see if you were able to understand the difference between speed and velocity. Get a partner and answer the questions on this THINKQUEST page. This online Physics quiz includes questions on distance, displacement and velocity.

If you want to do more exercises that involve speed and velocity, you can check out this BATESVILLE quiz page. This quiz involves questions about the relationships of distance, time and speed.

You are also encouraged to answer question numbers 1 to 5 of this BBC page. You should be able to interpret the graph of a cyclist’s journey in order for you to answer this quiz. Be sure to analyze and solve the questions first before clicking the GO icon. Enjoy! 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

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INDEPENDENT PRACTICE. After we have done some guided practice, we are now ready to work independently. Show an organized solution for the following question.Mark, a family driver, was asked to drive his employee’s son to Tagaytay City. He drove from Manila to Tagaytay at a constant speed of 32 kilometers per hour. The distance between these two cities is 56 kilometers. How long did it take the car to go from Manila to Tagaytay?

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SHORT QUIZNow that we have done some guided and independent practices, it’s time for us to have a short quiz.

Ready?! Take the QUIZ now!

1. How many items were you able to answer correctly? _____

2. Which item/s did you find difficult? Why? ____________________________________________________________________________________________________________________________________________________________________________________________________________

3. What should you remember in order to answer this correctly next time? ____________________________________________________________________________________________________________________________________________________________________________________________________________

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Going back to the situation given by your teacher, can you now identify the factors you have to consider in estimating the time Inday and Dodong should leave their house?

Name the factors:

________________________________________________________________

Explain why these factors affect the time Inday and Dodong should leave their house?

______________________________________________________________________________________________________________________________________________________________________________________________

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What time should Inday and Dodong leave their house?

Go back to your group and work together to solve for the time. Use the worksheet on the NEXT page.

PAIR ACTIVITY

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Assume Dodong will need to travel 6 kilometers and will take EDSA. On the other hand, Inday will take Ortigas Avenue and will need to travel 7 kilometers. You may use this CALCULATOR in solving.

What time should Inday and Dodong leave their house?

For Inday (Show your organized solution here.)

For Dodong (Show your organized solution here.)

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REFLECTIVE LOG. Use complete sentences in answering the following questions.

What is the benefit of knowing how to solve problems involving speed and velocity?

____________________________________________________________________________________

What factors are to be considered in solving for speed? How do we solve for it?

_________________________________________________________________________________

Which is easier to calculate, speed or velocity? Why?

____________________________________________________________________________________________________________

What factors are to be considered in solving for velocity? How do we solve for it?____________________________________________________________________________________

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FINAL OUPUT

A Ride To Remember

It is now time to create your own ROAD MAP. You will need a timer, coloring pens and bond papers in creating the road map.

We will grade your road map using the RUBRIC on the next page.

On a bond paper, create a road map that shows how far LSGH is from your home. Be sure to map out both the displacement and the distance you travel every night using coloring pens.

On another bond paper, estimate the distance you traveled from your home to the school and compute for your average speed.

INITIAL TASK. On your next way to school, take note of the time you left your home and the time you arrived at school.

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Criteria for Grading

EXCELLENT VERY GOOD ACCEPTABLE DEVELOPING STUDENT’S RATING

TEACHER’S RATING

Road MapLabels

(10 pts)

At least 90% of the items are labeled, located correctly and can be read easily.

(9 – 10 pts)

80-89% of the items are labeled, located correctly and can be read easily.

(7 – 8 pts)

79-70% of the items are labeled, located correctly and can be read easily.

(5 - 6 pts)

Less than 70% of the items are labeled, located correctly and can be read easily.

(0 – 4 pts)

/10 /10

Road Map Neatness

and Attractive-

ness

All straight lines are ruler-drawn; all errors have been neatly corrected. Distance and displacement are mapped out creatively.

(13 – 15 pts)

All straight lines are ruler-drawn; most errors have been neatly corrected. Distance and displacement are mapped out creatively.

(10 – 12 pts)

Most straight lines are ruler-drawn; most errors have been neatly corrected. Distance and displacement are mapped out properly.

(8 - 9 pts)

Many lines and corrections of errors are not neatly done. The map outs of the distance and displacement can be hardly recognized.

(0 – 7 pts)

/15 /15

ProblemSolving

Given and Symbols

Correctly represented distance, time and speed. No other irrelevant given was used.

(5 pts)

Correctly represented two of the three quantities involved in the problem. No other irrelevant given was used.

(4 pts)

Correctly represented two of the three quantities involved in the problem. Another irrelevant given was used.

(3 pts)

Incorrectly represented two of the three quantities involved in the problem. Used other given irrelevant to the problem.

(0 -2 pts)

/5 /5

Problem SolvingSolution

Correctly solved for the average speed. The solution is clear and organized.

(18 – 20 pts)

The solution is clear and organized but the final answer is incorrect.

(15– 17 pts)

Used the correct formula but there were copying errors and computational errors yielding to the wrong speed.

(10 - 14 pts)

No answer or wrong answer based upon an inappropriate solution.

(0 – 9 pts)/20 /20

TOTAL SCORE: /50

TOTAL SCORE: /50

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