# Capstone Video Reflection

In Humanities class, we made a video about the SDG goals, and I chose to make I video about the fifth goal, which is gender equality. What I am proud of this project is I think I made a very clear, and influential video. I also got the 2nd place when the class voted for the videos we watched. What I want to improve is providing more information to the audience.

# Our Amazing Catapult

This is our planner for building our catapult. First, we sketched out our design and wrote down our materials. We also took time to decide which model would be most effective for launching the ping-pong ball. Finally, we wrote our success criteria.

After we planned our catapult, we went to the Fab Lab and created the catapult. We used popsicle sticks and used rubber bands to join them. Then, we attached the bottle cap with hot glue. We tested the catapult a several times, and we were satisfied with the result. So we used it as the final product.

The most important thing that we learned about this project is how the quadratic function of our catapult can identify the graph. These were very important to throw ping-pong balls at the target. The most challenging aspect of this project was to create a function that would fit my catapult. Identifying the function’s x-intercepts and concavities were tough. Also, there was a problem with our catapult because it didn’t go as far as we expected. However, we managed to fix the problem by using a tighter rubber band. This project helped to understand the quadratic function because it helped transform the standard form into the vertex and coefficient form. Also, this project helped me draw the correct model for my function.

Our Ping-Pong Catapult Launch Video:

# Elevator Pitch Reflection

This is my elevator pitch for my capstone project, which is introducing a sustainable development goal (SDG) and talking about it for 1-2 minutes. I made a speech about the fifth SDG, which is gender equality. My topic was gender discrimination in ISB.

Reflection

I practiced a lot of times to deliver the message I wanted to the audience. What I think I did well in my speech was talking in a clear, and loud voice. What I could do next time is making more eye contact with the audience, because from the video I looked at my notes too much. I could also try to use gestures as I talk.

# Polymer Journal #4

Prototype #1                                                                                                                                                             20ml of white glue                                                                                                                                                15ml of borax                                                                                                                                                              5ml of PVA solution                                                                                                                                                5ml of laundry starch

This prototype wasn’t suitable for my expectations because it was too stiff and not slimy enough to fit between the keys, and it easily broke when dropped.

Prototype #2                                                                                                                                                         10ml of laundry starch                                                                                                                                            10ml of borax                                                                                                                                                              50 ml of PVA solution                                                                                                                                                  2 drops of food coloring

This polymer had all the features I wanted for my polymer because it wasn’t too stiff, and moldable so that it could get through keys but not stick under them.

Method of Final Design (Step by Step):                                                                                                           1.  Pour 50ml of PVA solution and two drops of food coloring  into a beaker.                            2.  Add 10ml of laundry starch and 10ml of borax to the mixture.                                                    3.  Stir it up until it blends together.                                                                                                                    4.  Take it out and use hands to dough the product.

Reflection:                                                                                                                                                                        When I made my first prototype, I didn’t quite get the polymer to be what I expected. Then, I realized that it isn’t easy to create an effective polymer, because it was hard to match the physical properties that were required. The physical properties of the prototype I wanted was being soft, flexible, moldable, and reusable. On the second trial, I eliminated the weakness of the first prototype, which lead to success. What I found interesting during this project was that numerous types of polymer can be made by just changing the recipe a little, and how polymers are used in our lives.

# Polymer Journal #3

The goal was to make a keyboard/screen cleaner for electronic devices. My polymer had to be soft like gloop, but flexible like super slime.

Prototype #1                                                                                                                                                             20ml of white glue                                                                                                                                                15ml of borax                                                                                                                                                              5ml of PVA solution                                                                                                                                                5ml of laundry starch

Borax is needed to keep my product together and not fall apart, and PVA is used for the polymer to stick. I tested my polymer by stretching it and covering my keyboard. However, it didn’t stretch like I expected, but broke in half. It wasn’t big enough to cover the computer as well. I realized that this polymer didn’t meet my requirements. It was too stiff, and not slimy enough to change its shape. It also didn’t do a very good job on cleaning my keyboard.

From this result, I decided to eliminate white glue and replace it with more PVA solution. I also chose to decrease the amount of borax when making the second prototype to make it less stiffer.

Prototype #2                                                                                                                                                         10ml of laundry starch                                                                                                                                            10ml of borax                                                                                                                                                              50 ml of PVA solution                                                                                                                                                  2 drops of food coloring

On the second trial, I added more PVA solution instead of white glue to make my prototype more slimy. I also decided to decrease the amount of borax to make the polymer more flexible, and drop some food coloring to make the product more interesting. The quantity was increased because the previous polymer wasn’t enough to cover the whole keyboard. As a result, my polymer was soft, flexible, moldable, and not too sticky. Then, I stretched the polymer and covered my keyboard with it. After I removed it, the dust stuck to the polymer and my keyboard was clean. It also worked the same when trying it on my phone screen. My second prototype fulfilled my requirements, so I decided to make it as my final product.

# Polymer Journal #2

The goal of my polymer project is to create a polymer that cleans computer keyboards or electronic device screens. The target audience is who uses electronics daily and needs to clean their devices frequently.

Electronic devices are a big part of modern life. As electronics are used a lot, they should be cleaned often. Washing agents, which are commonly used, are expendable and may be harmful to the environment. However, this product will be beneficial to people because it is reusable and eco-friendly. It will also eliminate the hassle of wiping out the cleaning agent again.

The physical properties of the polymer are: soft, flexible, moldable, and reusable. These features are needed because the polymer will have to be adjusted for different computers, and has to fit between the keys smoothly. Also, my polymer can’t be too sticky, because it would get stuck under a key. The polymer characteristics that I am looking for are gloop and super slime. The reason I chose these two polymers is that I liked how gloop was soft, and how super slime was not too sticky.

Developing Plan:                                                                                                                                                            1.  Design the product.                                                                                                                                                2. Create the best formula, and record it.                                                                                                        3.  Test out the polymer.                                                                                                                                              4. Create an advertisement for the product.

# Polymer Journal #1

Polymers are materials made of long, repeating chains of molecules. The materials differ depending on how the molecules are bonded together. There are two types of polymers, which are synthetic and natural.

Synthetic materials are materials that are man-made, which goes through the process of combining artificial substances. Some examples of synthetic materials are plastic bags and nylon, which is a type of fabric.

Natural materials are materials that come from nature, which could be a product or physical matter that comes from plants, animals, or the ground. Some examples of natural materials are water and stones/rocks.

Plastic is made out of various elements such as carbon, hydrogen, oxygen, nitrogen, chlorine, and sulfur. This material is used for plastic bags, toys, and plastic containers.

Silicone is made out of silicon, oxygen and other elements, most typically carbon and hydrogen. This material is used for accessories, utensils, and molds.

When a synthetic material is formed, natural resources act as a monomer. These monomers chemically bond together to make the material. This process is called polymerization. For example, oil and polythene molecules are combined to make plastic, which is a synthetic material.

Monomer comes from the Greek word, one part. It is the important factor for a polymerization to take place. When there isn’t a monomer there won’t be a polymer. Monomers are usually natural resources and even some of them are made out of series of monomers. Some examples of monomers are monosaccharides, amino acids, and nucleotides.

Polymerization is a method of making synthetic polymers by bonding small molecules into a chain. In this bonding, chemical reactions happen and they hold the bond of small molecules, also known as monomers. This results in the formation of a polymer. Which means that it is a process of making a polymer. The chain of bonded molecules is called macromolecules, which usually has a carbon atom.

Sources Used:

https://www.livescience.com/60682-polymers.html Bradford, Alina. “What Is a Polymer?” Live Science, Live Science Contributor, 13 Oct. 2017, 09:52, www.livescience.com/60682-polymers.html.

https://www.sciencenewsforstudents.org/article/explainer-what-are-polymers Perkins, Sid. “Explainer: What Are Polymers?” Science News for Students, 13 Oct. 2017, www.sciencenewsforstudents.org/article/explainer-what-are-polymers.

https://www.thoughtco.com/what-is-a-polymer-820536 Johnson, Todd. “What Exactly Is a Polymer?” What Is A Polymer, ThoughtCo., 26 Mar. 2017, www.thoughtco.com/what-is-a-polymer-820536.

http://pslc.ws/macrog/kidsmac/differnt.htm Lemer, Paul. “ Polymer Science Learning Center.” What Is a Polymer?, Polymer Science Learning Center, 2018, pslc.ws/macrog/kidsmac/basics.htm.

# Revolutionary Voices Journal: March 13, 2018

During the past few weeks, we wrote a journal about what it’s like to be a character in the revolution we selected. I chose the French Revolution because I found it the most interesting. I wrote a journal of a life living as a peasant in the revolution, to show the perspective of the third estates. Adding on to that, I did this to give readers knowledge of the French Revolution. There are three major turning points in the revolution, and I chose the Estates General, the execution of the King, and the execution of Robespierre. I learned that revolts lead to a lot of consequences, such as a change in government, and the lifestyles of the people who went through the event.

# French Revolution in Simple English

Having studied such a violent and cruel revolution in Humanities, Alicia and I made a short stop-motion video of the French Revolution with using cut-outs for a week. The most challenging part of making the videos was making the cut-outs in place. When we tried to move a cut-out to make a stop-motion effect, other cut-outs that had to stay in place was moved. For this reason, we took a lot of time putting it back where it was. Another obstacle was the sunlight. As time passed, the sunlight caused shadows on the whiteboard, so we had to move the whole thing to the side to avoid them. However, through the process of making this project, I had a chance to review and think deeply about the French Revolution. It was also an exciting experience to work with a partner and putting together a video. This helped me to improve my skills in communication and collaboration. This video is recommended to a person who is interested in revolutions, who are beginning to study the French Revolution and want to know the summary of the major turning points. Hope you enjoy it!

# Brown Girl Dreaming

Racial discrimination is a serious problem in society that affected a huge number of African Americans in the United States. In fact, 92% of 802 black Americans replied that they experienced discrimination in 2017.

Brown Girl Dreaming is a memoir by Jacqueline Woodson. She reminisces her cherishable childhood as an African American in the American Northeast and South in the 1960s. In Ohio, Jacqueline was born between her father, Jack, and her mother, Mary. She was also called Jackie by her family and her friends. While Jackie’s early years were spent in the North, frequent trips were made to the South for Mary Ann to visit her parents. Mary Ann deeply loved the South, but Jack couldn’t understand her. The region was segregated and the people are racially-charged. Their opposed sentiments about the South evoked arguments between them. Eventually, they got divorced, making Mary Ann and her three children moving south to live with her parents.

Despite all the racial discrimination, Jackie grew to love the South. However, she shows that racism is still ongoing by stating, “We all have the same dream… to live in an equal country that’s supposed to be the land of the free” (52).

Jackie’s story reminded me of Claudette Colvin, a brave young girl who had the courage to stand up for herself. Back in 1955, there were parted seats for white and black people. And if the “white seats” were all occupied, the black people had to stand up and give away their seats to the white people. On March 2, 1955, Colvin refused to concede her seat to a white passenger. She soon was arrested by two policemen, for violating the city’s segregation laws. For several hours, she had to stay in jail. “I was really afraid because you just didn’t know what white people might do at that time,” Colvin later said.

Thus, this book not only mentions about finding your dream and achieving it but also about a serious problem that is still required to be solved in our society.