S’more Stoichiometry Lab

Have you ever make s’more? If yes, that is great; however, do you know how to use s’more to teach others about limiting and excess reactants?

As part of our unit two topics vary from lewis structure to VSEPR model to polarity to types of bonding, we did a lab to further our understanding of limiting reactant and percent yield, which means the substance that gets used up in a chemical reaction and the percent ratio of actual yield to the theoretical yield respectively.

In this lab, I was working with three other boys, and we were given eight pieces of crackers, five marshmallows, and 12 pieces of chocolate candies. Following the procedure, we had to make four s’mores in which each contains two pieces of crackers, one marshmallow, and three pieces of candies. Hence, we can see that the candies and the crackers are the limiting and the marshmallows are the excess reactant because there is one marshmallow left over after preparing each s’more .

After determining which reactant is excess and which is limiting, we calculated the total weight of one s’more before and after roasting the marshmallow and the chocolate. The before-roasting calculation is going to be our theoretical yield whereas the after-roasting weight is the actual yield. Since we have both the actual and theoretical yield, we can easily find the percent yield by taking actual yield divided by the theoretical yield and multiplied by 100.

For me, I enjoyed not only assembling s’more but also working in a team that is full of boys and weighing and calculating the percent yield. It was my first time to make and eat s’more, and I love it! Can you find the percent yield of your favorite food?

 

 

Critical Teen Issues

Before entering adulthood, people have to go through “teen” stage, where rapid physical and emotional growth development occur. As we are a group of young Cambodian teens, our CTI team plans to conduct a workshop in order to facilitate discussion revolving around teen issues. On the very first week of our project, we brainstormed most common critical issues that Cambodian teens encounter. At the end, we came up with four significant teen problems in Cambodia: marriage and parenthood, stereotypes and bias, soft skill, and healthy teen relationships, which is our current topic.

With the changes that happen in teen’s brain, and the pressure from our parent, peers, partner, and society, it is challenging to maintain a healthy relationship with these groups of people. For instance, your parents expect you to have good grades in school and obey them, your partner anticipates you to say “yes” every time they ask you to do something, your friend always want to spend time with you, and the society requires you to look in a certain way in order to be “normal.” These expectations and the emotions that teens experience can adversely affect their relationship with other people.

In October, we have sent our survey, which consists of 26 questions, to Liger students. This survey helps them to reflect on their relationship with others and assists our group to better develop our workshop, which will be held on the 14th of November.  

Click here to view the responses

Fighting with Nature

As part of our Engineering Strand class, we were assigned to research an engineer so that we can learn more of what they did to get to where they are today.

For this project, I researched about Debbie Sterling because mainly she is a FEMALE engineer. Many people believe that girls should be an engineer because it is against nature. Additionally, even in college, girls who are majoring in engineering usually are the minorities. Sterling has inspired me in so many ways especially my mindset. Everyone is not born a genius, so to be successful, we need hard work. 

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“Even girls who love being a princess should get the chance to build the castle too,” says Debbie Sterling.

For girls out there, have you imagine of having building blocks or construction kit to play with instead of “pink” dolls, makeup and cooking kit? Many young girls do not have the privilege of having “blue” and “black” legos or simple construction components. Toys that they received from their parents or relatives are selected from the “pink aisle.” That is why Debbie Sterling, a Stanford graduate with engineering degree, has one important mission: to disrupt the pink aisle.

Sterling is an entrepreneur, engineer, forefront of movement to encourage girls to involve more with engineering and technology, and founder and CEO of GoldieBlox ‒ a toy company that is breaking the gender stereotypes by providing girls with building blocks to spark their interests in engineering and inspiring them to love STEM (science, technology, engineering, and math) more. Basically, the children can read the story of Goldie, female main character, and they can build a long with Goldie as she faces with challenges. By doing this, it will fight against the nature that girls like “pink, dolls, and princesses.”

Before she started this company, she was working as an intern at a branding and design agency at Hornall Anderson. Even though that she loved her job at that time, she was feeling what she is doing is not enough. She wants to create change and give back to the world in a meaningful way. As a result, she quitted her job and tried to find her true passion. At first, she decided to volunteer in rural India. Next, she worked as a marketing director of a “small, woman-owned jewelry company,” where she gets the opportunity to learn how to run a business. Finally, she found her passion because one of her friends mentioned that there is a lack of women in engineering field. That is where it all started. She gave herself one year to finish the development of GoldieBlox. Because of her determination, there are now more than one million of toys being purchased in more than 6,000 stores across the globe.

Despite all of her amazing accomplishments, her perseverance and hard work should not be neglected. Bearing in mind that only 14% of engineers and architects are female, so for her to enrol in this class in Stanford is very challenging. Being the minority, she felt that she did not fit in: the boys excelled at the assignments and her male teacher were making fun of her because she can not draw in 3 dimensions. At one point, she was on the verge of quitting until her friend encouraged her to not give up. They usually go to library to study and when she saw that the boys were there too, she “realized that it’s not about being a born genius, it’s about how hard you work.” On the other hand, when she were proposing her idea of GoldieBlox to the toy companies, they keep rejecting and say that it will never sell, it will never be successful, and especially that she can not “fight nature.” Regardless of people’s opinion, she still keep fighting for what she truly believes.

Growing up, Debbie has one important role model that she always look up to ‒ her grandmother. Her grandmother also eradicated the stereotypes that woman can not be in the Senior role, that women can not be involved in male-dominated field. She was “one of the first female art director in 1950’s,” and she is also “one of the first female cartoonists at Disney.” Because of what Sterling’s grandmother did, it was one of the reasons that motivated Sterling to reach her dream.

There are three main principles that helped Sterling be successful in this contemporary patriarchy world: risk taking, grit, and passionate. First of all,  her idea is a new concept, and it takes a great amount to risk to develop it because no one has done it before. However, she did not allow that to bar her from helping other girls. As our world continues to develop, it is essential that we experiment new things in order to create positive impact for the world. Secondly, she was being looked down because of her inability to draw in 3 dimensions, but she managed to survive it by working harder. Additionally, there were so many people that keep telling her that her idea is not going to work. Parents will not change their habit of shopping from the “pink aisle.” Nevertheless, she still determined to pursue her dream and at the end, everything works out finely. Finally, passionate, she spend her early twenties searching for her passion: from volunteering in India to working in a jewelry company. Based on her interview with Forbes, she said that find a business idea that you “truly passionate about.” It needs to be something that you are persistent in pursuing it. If you start to question your idea, “you won’t have the inner fire and conviction you will need to overcome the inevitable rough patches and rejections you will face.”

 

Works Cited

“Debbie Sterling.” EngineerGirl, www.engineergirl.org/13512/Debbie-Sterling.

“Get to Know Debbie Sterling’s Grandmother.” GoldieBlox, 16 Apr. 2018, blog.goldieblox.com/2017/09/debbie-sterlings-grandmother/.

Mason, Heather. “Meet Smart Girl Debbie Sterling, Founder and CEO of GoldieBlox.” Amy Poehler’s Smart Girls, Amy Poehler’s Smart Girls, 29 June 2017, amysmartgirls.com/meet-smart-girl-debbie-sterling-founder-and-ceo-of-goldieblox-103fc961ae37.

TEDxTalks. “Inspiring the next Generation of Female Engineers | Debbie Sterling | TEDxPSU.” YouTube, YouTube, 19 Apr. 2013, www.youtube.com/watch?v=FEeTLopLkEo.

“Women in Architecture and Engineering Occupations in 2016.” U.S. Bureau of Labor Statistics, U.S. Bureau of Labor Statistics, 10 Mar. 2017, www.bls.gov/opub/ted/2017/women-in-architecture-and-engineering-occupations-in-2016.htm.

Aquaponic: 100% Organic Farming

As our Earth’s climate is getting warmer, drought has become the worst nightmare for Cambodians, especially farmers. That is why we decided to introduce a family-size aquaponic system to the the rural community in Cambodia. 

However, to achieve this goal, we have to develop our own prototypes first. So, for the first couple of weeks of this project, we have been researching of what is an aquaponic and exiting models. In addition, we contacted multiple aquaponic owners so that we can visit their farm to learn more about it and figure out what need to be change for our system.

Since we are at the beginning stage and have a lot of things to complete, we have divided our group into six roles: project manager, reflector, explorer, reporter, networker and communicator, and finance person. I am a reflector, and basically I am a mediator that make a group comes to an agreement. It is also essential that I am not biased toward any idea whether it is mine or not. Furthermore, I need to ensure that every member get similar amount of work and to talk with the team about their feeling toward their work. I plan to send out a survey every school term to know how they feel about the group as a whole and each teammate.

 

MekongCup 2018 Organizer

MekongCup is an international non-profit Frisbee tournament, which will be held from the 20th to the 21st of October at the Navy Field in Cambodia. Currently, the teams that are going to participate are from Thailand, Vietnam, Singapore, and Cambodia.

Frisbee is a  new sport in Cambodia that many people are not aware of it.  In this event, there will be three Khmer teams including Liger. 

To ensure that this event will be happened on those selected days, Bee Force, Cambodia women ultimate’s team, decided to collaborate with five students from the Liger Leadership Academy to organize this competition.

There are multi-faceted roles in this project such as create a logo, Facebook page, and game schedule, collect music, finding sponsorship, contact ice company, find transpiration to take the players to the field, and research tents owner. For me, I have already find nurses for the two days of the event, and I am in the process of figuring out first-aid essentials that we need to buy. Additionally, I have contacted a clinic and a restaurant, ElevenOne Kitchen, that can cater our tournament. Right now, I am just dealing with small details with them like they should bring their own tables, dishes, utensils, and there is no kitchen at the field. Moreover, I and another student are working on developing an “info pack” for the players. Also, my most important job at the moment is dealing with finances and filling out the price for all variable and fixed costs. 

One of the main challenges that we need to overcome as a group is communication among our Liger and Bee Force team.  We usually distribute our information through e-mails, and sometimes it is quite inefficient because it can be unclear and the process of writing e-mails back and forth can be long. Despite this issue, I hope that all our tasks will be done before the event, and it is going to be exciting days!

Publishing a Poetry Book

One of the biggest projects that we did in Khmer class this year is creating a poetry book, which consists of our first Liger cohort writings. Each student contributed at least one poem that either related to education, parents, food, scenery, or love.

In addition to students’ writing, we included different types of Khmer poems and steps to create them. Most students did a lot of research and learning from existing Khmer poems, except book organizers and designers.

In this project, I was both an author and a designer. I contributed one of my poems and drew the feather that is on the front cover. Additionally, I also created the back cover and designed one section of the book, which centered around love, by using Adobe Indesign. After I finished putting students’ poems into the program, I had to do a lot of editing and asking the owner to confirm my changes to their poem.

A few weeks a go, after we completed designing this book, there were a couple of students showcased the printed version of this book at Khmer Literature Festival in Battambang province.

We are now at the stage of finding fund to print this book because we would like to share our love for literature to other students across Cambodia. Since we have a poor reading culture, we believe that this book will come in handy in nurturing the growth of literacy in Cambodia.

Example of one section of the book: កំណាព្យមនោសញ្ចេតនា

Flame Test Lab

Everything on Earth is made of atoms, and all atoms have electrons, which is a negatively charged particles that move around a nucleus, consists of protons and neutrons.

To further our understand of electrons, we did a cool Flame Test Lab to study how electrons respond to flame, which we can measure their reactions through the use of color. Basically, we put a tiny amount of chemical, Barium Chloride, Calcium Chloride, Copper (II) Chloride, Lithium Chloride, Potassium Chloride, and Strontium Chloride, on a Popsicle stick and bring it to the flame. When heating, the electrons are able to move from the ground state to excited or high-state energy. As they return to their ground state, they will release the energy as photons of light; therefore, the wavelength of the light will produce colors of light.  

There were two challenges that my team noticed when doing this experiment: distinguishing a certain color from another and removing the dropping compound. For instance, it was arduous to identify if the color of the flame is actually green or yellow or green or blue because they are very similar. Additionally, when the students burnt the compound, some of it fell down and stayed at the base of the flame, which can influence the actual color of the next compound.

Personally, I believe that this lab is very beneficial to our understanding of electrons’ behavior when they are being heated. If we just learn this concept from our teacher and did not do the experiment, I think that I would not understand that much of it.

Nothing Worth Having Comes Easy

After we came back from our holiday in August, this round one Math class shifted its focus from AP Statistics from last year to preparation for SAT as we are going to take it on October 6th.

Since August, we have been using Khan Academy as a part of our toolbox because it is an official SAT practice website since 2015. Furthermore, we used College Board and SAT books as a learning guide. In this class, we also reviewed important math concepts in SAT test because we barely devoted any time on them last year. Additionally, because SAT is a strategic test, we have been exploring multi-faceted approaches to those math questions.

Here are some effective tactics (The 4S) that I found very helpful in doing the SAT math questions and SAT test as a whole.

  • Skip  – The test is designed for us to get some of the questions wrong; therefore, it is okay to miss a few questions and go to solve other questions that we know how to answer. We should not invest so much on questions that we are not sure how to solve when we can use that time on something we know how to do. Remember that time management is crucial in this type of test.
  • Skim – Since this is a time test, if we can skim the question, it would save us some time that we can use for other questions. For instance, if they give us a table or a geometric shapes, we can skim through the writing because it mostly the same as what is being labeled on the table or the shape.
  • Stamina – The test is 3-hour long, so we need to ensure that we still have enough power to do the last math section. I recommend to take at least two practice full tests to know the full experience of taking the SAT. Moreover, I suggest to keep doing math and literacy questions specifically related to SAT test. “Hard work beat talent when talent doesn’t work hard”- Tim Notke.  
  • Self-motivate – I respectfully agree that SAT is not something that someone do for pleasure; however, we have to remind ourselves that why are we doing it? Additionally, remember that “there is nothing you can’t do, if you set your mind to it. Anything is possible.”

 

 

Which is the Real America?

The first cohort of Liger Leadership Academy is going to take SAT in the 6th of October, and since the history and literature sections of SAT are closely tied with American history, Literacy Round One has focused on the theme of America.

In this class, we were given six American-history texts from CommonLit to read and analysis each week: Give Me Liberty or Give Me Death, Excerpts from Thomas Jefferson’s Writing on American Indians, Causes of the American Civil War, America’s Shifting Views on Immigration, Excerpt from The Jungle, and The Great Depression. To further understand these oppressive issues, we also read additional articles from Newsela and watched videos and part of a documentary series.

Within each text, we had to read, annotate, answer multiple choice and writing prompt questions, research the meaning(s) and part of speech of each vocabulary and write a sentence for each part of speech as well as discuss the text and related topics with our friends and learning facilitator. To better manage our time, we usually talked about the text and any word that we struggled to understand on Monday, discussed about multiple choice questions and writing prompt(s) on Tuesday and Wednesday respectively, and worked independently on our “Vocabulary Exploration” and answered the questions on CommonLit on Thursday.

Personally, I am always eager to learn about world history because it helped me to understand the past events that affect each country today. For instance, when I read and discussed about Causes of the American Civil War, I now fully understand why racism is still a reality in America. Hundreds of years ago, black people were considered an “inferior” species until the point that they were used as “property.” Even though that we now in the 21st century, many Americans still suffer from discrimination, injustices, and exploitation.

In addition to the importance of learning history, these texts has taught me that the America that I used to think of is not always the truth. I used to believe that America is a land that fills with amazing opportunities and happiness; however, after reading these texts, that is not always the case: America has suffered and currently face with many atrocious issues. So, which one do you believe is the real America?

Causes of the American Civil War

Question: Analyze how the differing views on slavery between the North and South resulted in the Civil War.
 
As the Constitutional Convention of 1787 called both the North and the South to form “a single federal government,” there was a dispute among the two colonies: they had different perspectives on slavery. The North viewed slavery as a sin and therefore should be eradicated; whereas the South, they believed that slavery is “the basis of Southern life”‒ therefore ending it will threaten the Southern way of life ‒ and declared that it is ”ordained by God.” Because of these opposite stances, they had lead to virulence and violence. To abolish slavery, the North “volunteers patrolled streets to rescue fugitive blacks from the slave catchers.” This action has caused the southerners to respond “with an increasingly virulent hateful attacks on their critics.” This shows that the South really did detest the North’s effort to free the slaves. In addition to the adverse effect of their views, two days later after a “scathing speech” was delivered in June 1856, a Southern congressmen “severely beat the abolitionist with a gold walking cane.” This reflects the antagonism that the southerners had toward the abolitionists. These heterogeneous viewpoints on slavery demonstrate how they contributed to the cause of the Civil War.
 

America’s Shifting Views on Immigration

Excerpt from the Jungle

The Great Depression

Toyota Impact Challenge – Semi-Final Pitch Night

On the 14th of August, I participated in an event, hosted by Impact Hub, where six passionate start up teams “pitch to a panel of judges for 6 months incubation.” All of their apps have to link to one of the themes of the Toyota Impact challenge:  road safety, smart cities, future of transport, and environment.

After the first session, I went to talk with a girl who is the founder of JisDer app, which could possibly solve the issue of traffic jam in Phnom Penh. Basically, the users can see if there are people going to the same place as them and connect with the driver to pick them up too. Then, the driver will receive money from the user. After she reintroduced me to her app, I asked her multiple questions, especially about user’s and driver’s safety.

One of the teams in particular that I love has developed a TosJis app. They noticed that public transportation is very popular all around the world, except Cambodia. To combat this problem, they created an app to show the route and real-time updates of each bus. In the future, they plan to implement GPS trackers on all the buses so that the users can receive “accurate arrival and departure time.” Because of their business model and feasibility, their team got selected for the 6 months incubation program with the other two teams.

 

Click on the link to read more about the other 6 teams: https://phnompenh.impacthub.net/2018/08/14/toyota-impact-challenge-semi-final-pitch-night/