weaks5_5

groWeaks Period 5 Group 5 __//**Math Nerds page!!!**//__ Ficillitator: Brianna Gersen Recorder: Gabby Castilleja Number Cruncher: Jason Clark

Follow the directions on the Vertical Motion page, to complete each of the sections below.
=**//__PART ONE:__//**=
 * __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.

5) 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?

2. "H" is a representation of the height of the keys at any given point. "T" is a representation of the time necessary for the keys to reach the ground.** **"H/naught" is a representation of the initial height of the keys. h = the height of the object at any given point in time. -to measure how high the building would be t = time the object is in motion -how long the object is in the air = the initial height from which the keys was dropped -the staring height of the object in the equation**
 * 1. I chose this equation because this the proper way to state that the keys are being dropped.
 * 3. Answered in the equation above next to the keys.**

=**__PART TWO:__**=
 * __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?

**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?

 * 1) a= -16 b= 0 c= 30
 * 2) The affect of "a" will make it a negative parabola and it also determines the width of the parabola. **What else?**
 * 3) On the graph "c" is effective by ensuring that the y-intercept will be 30 feet in the air initially. **What does that mean? 30 what?**
 * 4) the discriminant turned out to be 1,920 **Where is the math for this? How do I know you didn't mess it up?**


 * __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.

** Where is ** a=-16 b=0 c=30 the math to fi nd the roots? Section 3 is late. ** __**//Vertex://**__ Represents the highest point on the building that keys are being dropped from. __//**Y- intercept:**//__ 30 feet __//**Roots (+1.37 seconds):**//__ after using the quadratic formula, this is one of two answers that we received. We chose this because the keys were being dropped downward as opposed to being thrown upward which would be -1.37. The roots represent the amount of seconds it takes for the keys to hit the ground.
 * [[image:group_5.1.png width="326" height="258"]]
 * __The Solution and The Meaning__:** What do the different parts of the graph mean? What does the solution mean?

Brianna: I found it the most difficult to solve our problem with the formula. I would have focused more on the project and would of gotten more done the website. I think doing this did help because working with others makes it easier to understand. I thought it helped a little to be the teacher and it was fun. :) Jason: I found it most difficult to explain the effect on the graph that the discriminant may cause. I think i could ask for more help next time, though. I think this helped because i now have a better explanation or "a", "b", and "c's" purpose. It felt great to be the teacher. Gabby: I found the most difficult was to solve our problem with plugging the numbers in the formulas and also figuring how to solve for the graph. I would if tried to focus more on solving the problem than graphing it. Honestly yes it did help because i now have a better understanding of the vertical motion formula and how to graph it. It felt amazing being the teacher because you got to explain in your own way.
 * __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?