jensen1

Maya, Aixa, & Joyce(: You drop your keys from a window 30 feet above the ground to your friend below. Your friend misses them. How many seconds did it take for the keys to reach the ground?
 * Follow the directions on the Vertical Motion page, to complete each of the sections below.**
 * __The Word Problem__:** How would you solve for time in the problem your group was assigned? Prepare the equation to solve for time, defining the variables and supporting your choice in equation.



This is the correct equation because the object is being dropped.

h= height of object at any given point in time t= time the object is in motion (seconds) = The initial height (in feet) from which the object was dropped or launched

Equation:


 * __The Parabola:__** Use what you know about parabolas to predict the shape of the graph. What will it look like, and how do you know?

a= -16 Since a is -16 the graph will be upside down and since it is a negative whole number it will be skinny. b=0 c=30 Since c is 30 it will move the vertex upward & makes the graph a maximum.

Discriminant: = If then 0+1920= 1920 which is greater than 0 therefore there will be 2 answers.


 * __The Math__:** Pretend you are the teacher, and this section is your lesson. Post the calculations required to graph the equation and find the solution, and show all the steps to doing so. Teach your audience all the important parts of the graph and explain what they mean for the problem you were given.

Vertex and Axis Of Symmetry Calculations:

Axis of symmetry: x=0

How to Solve for roots using Square roots:


 * __The Solution and The Meaning__:** What do the different parts of the graph mean? What does the solution mean?

The Vertex & the y-intercept represents that the object started at thirty feet above the ground. The roots represent how long it takes for the object to hit the ground which is 1.37, but it is only +1.37 seconds because we are dealing in time so -1.37 does not apply. The solution __ tells us that the object will take 1.37 seconds for the object to hit the ground. The object is in the air for 1.37 seconds because that is the point that the parabola crosses the x-axis.

>:)__


 * Reflection__** How did it feel to do the work and pretend to be the teacher? Do you think you understand the material more, now? Why or why not?

Aixa:

The most difficult thing for me was part 2 because thats when we mostly started everything and were learning to move and find how to work wikis and to do almost all the work.If i was to do another wikis project I would go home and try to do work at class with my partners. This project didn't really helped me understand quadratic equations and vertical motion better because it was like a regular problem but only done in computer, but at the same time it helped me remember the steps. Being a teacher for a few days was pretty nice because now i know how hard is for teachers to do all the steps to do word problem in the computer. It was a good experience for me and also this might help me in the future like when I go to high school and college. Maya:

The thing that i found difficult to do was part 3, when we had to do the graph. Finding the roots was where I got confused and had trouble. What I would do differently is to make sure that everything runs smoother. Next time I will try to be as careful as possible when putting in the screen shots, so that we don't have redo them. This project sort of helped me because it helped me remember the steps of how to solve the quadratic equations and vertical motion problems. To do the work & pretend to be the teacher made me appreciate all of the work that teachers do for our education.

Joyce:

The thing that i found difficult to do was to make the graph, because it was hard to create, find the roots, and label everything on it. I wouldn't do anything differently because i think that we timed and planned out everything very well. I think that we did a great job on this project, and we'll get a really good grade on it. This project did help me understand quadratic equations and vertical motion problems better because my group and I collaborated and we went through the problem step by step thoroughly. Pretending to be the teacher felt stressful because you have to make sure that everything is correct and finished on time, however i think that I would do a good job at being a teacher. Over all I am confident of the end results of our project! :D