Tuesday, November 18, 2008

PSSA Open-Ended Question 1

Julia created the coordinate grid below to identify the locations of her house and her friend Carol’s house. Julia’s house is located at (155, 102). Carol’s house is located at (493, 388).




















A. What are the coordinates of the midpoint between the girls’ houses? Show all your work and explain how you know your answer is correct.

B. There is a straight path between the girls’ houses. If Julia and Carol meet at the midpoint between their houses, what distance would each girl have to walk? Round the answer to the nearest yard. Show all your work and explain how you know your answer is correct.

Please recall that you will receive your grade for this assignment by utilizing the PSSA Open-Ended Math Scoring Rubric...

15 comments:

Anonymous said...

(324, 245) is the midpoint and that's all I'm doing!

Anonymous said...

The midpoint of the girls houses are: (324, 245). YAHOO!!!!

Anonymous said...

(324,240)

Anonymous said...

ARE???...Really??...you can see the math teachers are here...not the English...

Anonymous said...

(324, 245) thank you for letting us see how to blog
i like this it would be great for the shy student also easeir to read some hand writing
nancy brown

Anonymous said...

The midpoint is (324, 245). I know my answer is correct because I know the formula and I used it!

Anonymous said...

The midpoint is (324, 245)..... This is a wonderful tool for the classroom!

Anonymous said...

(324, 245) I found it using the midpoint formula.

Anonymous said...

324, 245 really cool

Anonymous said...

(493+155)/2 = 324
(388 + 102)/2 = 245
The midpoint is (324,245)
I know my answer is correct because I used the midpoint formula.

Part B - I need my calculator! :-)

Anonymous said...

MP = ((x1 + x2) / 2 , (y1 + y2) / 2)

MP = (493 + 155) / 2, (388 + 102) / 2

MP = (648 / 2 , 490 / 2)

MP = (324, 245)

Anonymous said...

The midpoint is (324,245) This is a great idea for students.

Anonymous said...

I forget. Please go over in class.

Anonymous said...

(324, 245)...for sure

Anonymous said...

(324, 245) use the midpoint formula.