Category Archives: Science Communicators

Helping You Help Yourself – A new approach to learning

Can a frequently asked questions (FAQ) list without any answers help you solve your problem?

You might scoff at the idea at first and wonder to yourself, “if there are no answers, what’s the point of an FAQ list?”

Surprisingly, a recent study from the University of British Columbia conducted by Dr. Sarah Burke has found that university students were able to solve problems more effectively when given just a list of frequently encountered problems.

In her study, Dr. Burke – a physics and chemistry professor at UBC – offered a “help menu” to first year students during their physics lab exam. The menu contained a list of commonly encountered problems, and students were given the option of requesting for help with specific tasks at the expense of some of their exam grade.

Over 20% of the students were able to solve their problem simply by looking at the list of areas to ask help for and did not request for actual help from the instructors.

So how does this “help menu” work?

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Troubleshooting

Troubleshooting is a process of problem solving, which is often applied in technical fields to repair failed products, machines, or systems. It is a search for the source of the problem in a logical manner by following a series of steps to determine the root of the problem and learn how to go about solving it.

Although you might not realize it, you already use troubleshooting skills on a daily basis.

https://www.youtube.com/watch?v=8qE2BKqxDDM&feature=youtu.be

Why is troubleshooting important?

Problem-solving and troubleshooting go hand-in-hand helping us see different solutions to problems from a number of different perspectives. Troubleshooting may effectively strengthen our capacity to think intelligently and flexibly when faced with unfamiliar problems that not only school, but life as a whole throw in our direction.

After the interview with Dr. Burke about her recent study, she made it evident that in today’s ever-changing world, one of the most important criteria for success is having the ability to think and work independently.

“Those are life long skills, right, if you know very general strategies on how to tackle a problem, you can tackle problems in many different fields.

Dr. Sarah Burke

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How do you encourage troubleshooting?

So we’ve seen why troubleshooting is important, and how it can help us solve our problems. But how do we learn to troubleshoot independently instead of simply relying on our friends or the teaching assistants for help?

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This is the idea behind the “help menu”.

Dr. Burke compares the use of a help menu to a scratch card. She mentions the analogy of points being deducted for every time you scratch an answer, as a penalty. The same method was used in her study, as students were incentivized to troubleshoot and solve the problem themselves to avoid point deductions on the exam for asking for help.   

The following video, outlines a snippet from what may occur in a physics laboratory with, and without the use of a help menu.

So the next time your iPhone stops working, instead of checking the FAQ list for a quick solution.

Pause for a second.

Look at the list of potential problems and try to solve the issue yourself. You might be surprised by your own ability to troubleshoot while strengthening a crucial skill for other areas of your life at the same time.

Group 3: Justin Tao, Harmen Tatla, Zimeng Li, Kelvin Au

 

A Greener Approach to Developing Gels

UBC researcher’s serendipitous discovery could influence a greener method in the gel production industry.

Graduate student Lev Lewis of the Department of Chemistry at the University of British Columbia unexpectedly developed a simple method to form gels from cellulose nanocrystals.

First off, let’s break down what a cellulose nanocrystal (CNC) actually is. Cellulose is one of the most, if not the most abundant molecule produced by plants. It is responsible for the strength, structure, and form that allows you to hold a flower up by its stem. Next in order, a nanocrystal is basically a small crystal. Now how small are we talking? A nanocrystal, is a crystal smaller than 200 nanometers. To put this value in perspective, the diameter of a hair is roughly 100,000 nanometers across. In other words, these CNCs that Lev is working with are really really small crystals.

 

Graphic representing the molecular structure of CNCs which is composed of chains of individual cellulose molecules. Image courtesy of yalescientific.org via the Keten lab.

Graphic representing the molecular structure of CNCs which is composed of chains of individual cellulose molecules. Image courtesy of yalescientific.org via the Keten lab.

Lev found that by simply heating a CNC-water mixture under high pressure, this would yield the liquid to thicken into a gel.

Gel made using CNCs under high pressure and high temperature. Picture courtesy of Lev Lewis.

Gel made using CNCs under high pressure and high temperature. Picture courtesy of Lev Lewis.

He attributes this unexpected formation of gel to the desulfation of CNCs (or the removal of sulfur groups) which causes the crystals in the mixture to become unstable, thus forming a gel. The following audio clip describes the process of desulfation using a candy analogy we all can understand.

Constructing gels using this method is an attractive objective because it’s easy, it’s green, and it uses cellulose which is renewable resource. These gels are used in a wide variety of products including diapers, contact lenses, insulation, and tissue scaffolds to list a few. Perhaps one of the most possibly important applications of these gels is in drug delivery. Lev explains that gels could be used to treat cancer instead of the traditional method of chemotherapy. Due to the physical properties of a gel, we could inject them into the cancerous area of the body needing treatment and expect them to stay put. This allows treatment to be localized as opposed to chemotherapy that wreaks havoc on the entire body. The following video elaborates on CNCs and their applications.

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Currently, CNCs can be obtained from wood pulp. Seeing as the world is increasingly making the shift from paper to digital, there’s a lot of wood pulp, which is used to make paper, going to waste. Due to the ease and accessibility of materials of Lev’s method of gel formation, large scale industries that use gels in their products could adopt this method, thus providing an outlet for all the unused wood pulp being produced.

~Lindsey Belsher, Jennifer Jung, Uzair Ahmed

Liar, Liar… Brain on Fire

Whether you lied to get out of homework, or to get out of work, or even just lying to your friend to make them feel better… we have all been there. Lying is a part of the human condition, but have you ever wondered what triggers you to tell that lie? I’ll admit that there have been many instances where I have lied. For example, I’ve told my friend many times her hair  looks great – when it really doesn’t.

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Studies in the field of neuroscience show there may be a biological explanation behind why lies escalate over time.

 

Image Courtest of: Huffingtonpost.com

Image Courtesy of: Huffingtonpost.com

So what triggers a lie? Psychologist Tali Sharot from the University College of London suggests that the brain becomes numb from the aching it causes, thus lying becomes a routine.  This explains why people progress easily from smaller to bigger lies; they become used to the fabrication.

Sharot and colleagues suggest that the “emotional adaptation” is the logic behind the acceleration of dishonesty. A little white lie can’t hurt anyone, right? You’re inclined to feel slightly bad from your first lie, but what about the few dozen after that? Will it feel just as bad? I’ve lied many times as a child and used to feel incredibly guilty, but now making the same lies just doesn’t feel as bad.

Sharot then conducted a study with 80 volunteers. These volunteers were to scrutinize jars containing pennies and estimate how much money was in them. The volunteers had partners who had to estimate as well, but had blurry pictures. Thus, the partners had to rely on the volunteer’s advice to estimate. Some volunteers were told that the more accurate their guess, the more the both of them would win; an incentive to send the truest estimate. In other instances, the more the partner overstated the money the jar contained, the more the volunteer would win and the less the partner would; an incentive for the volunteer to give the partner false information. Of the two cases, the second situation had partners lie more.

Next, 25 volunteers underwent neuroimaging when they were providing information to their partners. The amygdala, the part of the brain that responds to processes encountering emotional experiences, spew out activity after the first lie. This represents the idea that lying is unpleasant.

Image Courtesy of: http://brainmadesimple.com

Image Courtesy of: http://brainmadesimple.com

However, activity experiences by the amygdala decreased before subsequent lies. The larger they decreased, the more lies were detected by the volunteers in the next rounds. This suggests that the more decrease in amygdala activity, the more comfort one will experience when lying.

“Think about it like perfume. You buy a new perfume, and it smells strongly. A few days later, it smells less. And a month later, you don’t smell it at all.” 

    – Tali Sharot, a psychologist at the University of University College of London.

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Image Courtesy of: Pinterest.com

This idea of emotional adaptation relates to every human, because let’s be real… we all lie when we think we can get away with it. You experience less guilt when you easily get away with lying. The moral of the story is, don’t become a liar, because a little white lie doesn’t end just there. It begins to snowball. Also, you wouldn’t want your nose keep growing like Pinocchio, I know I wouldn’t.

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By: Harmen Tatla