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Lab4Chemistry’s brand new category 😱 Chemical Reactions!

Food decomposition, glucose formation in plants, engine combustion, metals oxidizing⏤these are just some of the countless examples of chemical reactions we encounter every day. Technically speaking, a chemical reaction involves the transformation of one substance into another. During the conversion process, bonds may form or break and molecules may rearrange, but no atom is created or destroyed.

This concept is central to our understanding of the world. It has allowed scientists to better comprehend the behavior of matter, which has resulted in substantial leaps forward in technological and industrial development in recent centuries. The food, cosmetic, pharmacological, mining, and energy industries, among others, all owe a great deal to chemistry.

We also should acknowledge chemistry’s significant contribution to environmental causes as well as economic ones. For instance, the behavior of chlorofluorocarbons (CFCs), their interaction with the ozone layer, and the effects of greenhouse gases are all phenomena better understood through the lens of chemical reactions.

A third, equally important branch of study is biochemistry. By investigating how chemical reactions work within living beings, we have been able to make impressive breakthroughs in medicine by harnessing the power of plant, chemical, and other material resources. 

Of course, chemical reactions can also be fascinating and illuminating on an instructional level. Learning about chemical processes is a good entry point for analyzing Socio-scientific Issues (SSI), studying the Nature of Science and the History of Science (NOS and HOS), and promoting experimentation within investigative experiences.

The team at Lab4U has been similarly inspired by chemical reactions. As a result, we have developed three categories to help teachers and students further their studies with hands-on experiences. The first is a general category, which introduces phenomena that involve chemical changes and the stoichiometric relationships that form between reactants and products. The second and third are more specific, covering the physicochemical parameters of chemical reactions and acid-base balances (we’ll discuss them in more detail in our next Blog).

As of now, we have three engaging experiences for students in our chemical reactions category. In the first, they generate chemical reactions and observe the ways in which a reaction manifests itself (including the production of light, changes in the temperature of the system, effervescence, formation of a precipitate, color change, or release of a gas). Along the way, students will also get a feel for methodology and processes, a fundamental skill in the study of chemistry.

The second experience explores how the study of a chemical reaction can impact a person’s lifestyle. By examining the consumption of starch in their diets, students will learn about how scientific knowledge can help them make better informed health decisions. These types of objectives are part of the third level of critical scientific literacy proposed by Sjöström (2014). In his article, he explains that a body of scientific knowledge is at its highest level, the emancipatory critical focus, when it helps citizens develop critical, reflective thinking skills and make informed decisions on social and personal issues.

The third experience is a small stoichiometry research project, where students are presented with a mystery they must solve. It isbased on a semi-structured inquiry (Vergara & Cofré, 2012), where a problem is posed and it is up to the students to design an experiment to address it. Therefore, it can be a helpful tool for exploring the Nature of Sciences (NOS) in parallel, as there is no single “scientific method.”

We invite all our readers to dig into the new Lab4U experiences and experiment with Lab4Chemistry. The next Einstein or Marie Curie could be at your school!

References

Sjöstrom, J; Stenborg, E. (2014) Science education research and education for sustainable development, 37-46, Shaker, Aachen, Germany

Vergara, C., Cofré, H. L.  (2012). La indagación científica: un concepto esquivo, pero necesario. Revista chilena de educación científica, 11(1), 30-38.

Lab4U Talks Episode 6: Inspiring Students to Solve Real-World Problems with Martha Styer

In our last episode, Komal chatted with Sylvain about how our approach to education is vital to shaping a robust future workforce. Today, we’re excited to dive further into that educational piece with Martha Vargas Styer, a celebrated engineer and high school physics teacher based in Sacramento, California.

Martha spent 30 years as an electrical engineer working for the California Department of Transportation. An expert in her field, she was asked by the Federal Highway Administration to travel to other U.S. states and train engineers on fiber optic design for high-bandwidth demand technology, such as CCTV. She also served on a national panel for the Advanced Traffic Controller.

Her most recent stop, however, has been the physics lab at Cristo Rey High School, where Mrs. Martha is the Physics Teacher. There, she’s encouraging the next generation of budding scientists, engineers, and mathematicians to consider how what they learn in the classroom (or, during the pandemic, in their own homes) can make a real difference in the world.

In this episode, Komal and Martha discuss her transition to teaching, how to prepare students for success no matter which path they choose, and the importance of discovery in and out of the classroom.

Episode’s outline:

  • How Martha learned “what I want to be when I grow up” (7:18)
  • Why it’s imperative to inspire a diverse group of future engineers (9:00)
  • How the pandemic brought Martha to Lab4U (12:28)
  • Why making mistakes is exciting (22:20)
  • The good that can come from remote lab work (31:10)
  • Example discussed by Mrs. Styer and Komal about how students can measure and analyze intensity and frequency with Lab4Physics with a musical instrument (or digital instrument in case you don’t have one).

On Expertise and Education

Martha’s work as an engineer meant finding effective solutions for problems that might not always be apparent but that shape our everyday lives. She discusses how foundational STEM techniques like data collecting and testing were crucial to finding solutions to real challenges.

Still, she surprised herself when she became a high school physics teacher. While she had considered becoming a math teacher upon retirement, physics was not originally on her radar—until she realized it was a way to use math to wow kids, thanks to the field’s interesting labs and real-world applications.

On Diversity in Engineering

Enrollment of female engineers in educational programs is dropping. Martha talks about how when she was in school, the numbers were low, but they’re even lower now.

“Initially [I began teaching] to see if I could engage more female students into engineering. Then being at Cristo Rey, I realized there aren’t any latinos either, so I said, we need more Latinx.”

Mrs. Martha Styer, Physics Teacher at Cristo Rey High School, Sacramento, California

Martha discusses the opportunity to empower a new generation of Latinx engineers. She stresses that it’s not that kids aren’t smart enough to learn, but that they need to be prepared to succeed. By creating a classroom environment that encourages hands-on learning, kids gain the confidence required to continue along the STEM path in college and beyond.

Lab Work and the Realities of Distance Learning

In this image, one can appreciate how a creative student is taking a picture of a moving object.

When Mrs. Styer asked about their at home lab experience, a student (the one in the left image) replied:

“The most challenging part of this lab was positioning my camera in a way that I could press the start button and also be able to roll the ball at the same time. The best part of this lab was when I figured out how to do both things at the same time and was able to finally see how the data all came together.”

It is easier to captivate students in a classroom, where you can set up engaging experiments and demand their full attention. However, when the pandemic hit, Martha had to find a new way to provide her students with the same quality of education. A Google search led her to Lab4U, which has helped her recreate labs in her students’ homes. Now, entire families might get involved in making something work. Students also are required to share selfies of themselves completing the labs, which keeps them accountable but also allows them to see how they are participating in a collective experiment (and experience).

The Importance of Making Mistakes

Martha gets excited when her students make mistakes because each one is a gifted opportunity to learn something unexpected and new. Komal and Martha then discuss how testing, practice, and error are all critical parts of the scientific process.

A Silver Lining

While it has been a difficult year for both educators and students, Martha reflects on how distance learning, particularly in physics, has provided a huge growth opportunity for her students. Whereas before some students might have been able to get by on group work when completing labs, now each person has to take responsibility for each step of the process. They have learned focus and discipline, two skills that will serve them well in college and are applicable to any area of life.

If you want to check out our conversation at Youtube:

Want to make a change in education too? Write us [email protected]

Lab4U Talks Episode 5: Education Technology for the Future of the Workforce

In the previous episode, we talked about how to catalyze STEM education for the next generation of scientists and problem solvers.

It is critically important for Lab4U to foster conversations about how to improve science education and what tools we will harness to empower science-minded students to ask questions and gain better science skills to solve the next decades’ problems.

In this fifth episode, Komal talks to Sylvain Kalache, co-founder of Holberton, an education company providing tools, curricula, and teaching methodology training the next generation of digital talent at scale. Their two-year software engineering school’s mission is to prepare the next generation of software developers through 100% hands-on learning.

Don’t miss this important conversation about how, through the development of skills you can learn how to learn.

Episode outline:

  • Education: the one thing that hasn’t changed 2:27
  • Holberton School’s inspiration 3:30
  • Talent is universal, but opportunities are not – Democratizing education in Holberton School 6:33
  • Learning by making mistakes: knowledge is not enough, we need to develop skills for the future of the workforce 10:32
  • The importance of students diversity at  Holberton School 14:38
  • We must rethink education:  Reducing the gaps we see in education today.  16:14

Education: the one thing that hasn’t changed

Education is one of the few things that has not changed in centuries. However, when you help someone at school it is called “cheating”, but when you become a professional and have been part of the corporate world, collaboration is essential, which  shows us how the educational system is obsolete.

Holbertons Inspiration

Sylvain’s inspiration to create Holberton was based on the observation of ​​the lack of digital talent. In the last 5 years, Holberton has focused on creating digital talents by training Silicon Valley-grade developers  in 9 countries. Sylvain affirms that “There is a lot of talent, but not quality education” since nowadays talent makes education. However, we are going at a very fast pace, and “These are great times to be in education today.” Their first product, Holberton School, is present today in 9 countries and seeks to get the raw talent of the people who attend it. In some way, the COVID-19 pandemic has accelerated the way you teach today, and we must take advantage of this instance to rethink education in times that have already changed. The company also partners with other players, such as Pearson where they created a web developer online program offered in Brazil, or with Anahuac University with a DevOps MOOC course.

Democratizing education at Holberton

A few years ago it was imperative to have an academic degree to be part of the workforce. Today, this is fading, skills matter more than the degree you have. Companies are looking for talent to have the knowledge and know-how. If we go back a few centuries, the key to learning was to go to the monasteries to listen to monks give classes. With the Internet access to knowledge is no longer an issue. According to Sylvain, the key today is learning to learn, which will make you a highly desirable professional for companies.

Learning by making mistakes: knowledge is not enough, we need to develop skills 

Sylvain made a very interesting comparison to show us that you not only need the knowledge, but also the skills to carry out whatever it is you are doing, taking bread baking as an example. Reading the best baker’s recipe will not allow you to bake a tasty bread on your first try. Practicing, over and over will lead you to good results.  Learning by doing, is key to any field, from baking bread to writing software.

Holberton School learning methodology  has proven to be working across cultures, in Europe, Africa, North America, and Latin America.

The importance of Student Diversity

Holberton School students are very diverse: 30% women and 50% people of color, aging from 17 to 58 years old, coming from all walks of life, from former delivery person at Rappi to breakdancerThe school does not require any degree of specific knowledge to apply. Blind and automated, the admission process is looking for talent and motivation, betting on the student future, rather than their academic past.

We must rethink education:  Reducing the gaps we see in education today

Sylvain thinks that social skills are very important and that communication is critical for students’ and workers. Sylvain thinks that learning to learn, critical thinking, and creativity, as well as not putting the teacher as the only source of knowledge shall be key to education, at any age.