Tag Archives: guest post

Guest post by Mattias Lundmark on Self-Determination Theory (Vansteenkiste, Lens & Deci; 2006)!

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“Motivation is left, right and centre in learning. Self Determination Theory’s (SDT) is one of the main  theories of motivation, and its two founders, Ryan and Deci, are number 6 and 16, respectively, on the list of the most cited researchers in the world. (They have a staggering 1 148 467 citations between them as of today.) Can SDT give us ideas for how to support students’ motivation to perform academically?” This is the start of Mattias Lundmark‘s guest post about an iEarth Journal Club article, and of course he will answer that question!

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Guest post by Kirsty Dunnett: “Thinking about my positionality as a teacher and researcher in physics education and academic development”

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I thought a lot, and wrote (e.g. here), about my positionality in relation to my work recently, inspired by conversations with, and nudging by, Kirsty. Below, I am posting her response to my blog post, where she shares her reflections on her own positionality and also on why and how we need to be careful with demanding, or expecting, or even just implying that we think people should be, sharing that kind of information. Definitely worth a read, thank you so much for sharing, Kirsty!

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Guest post by Kirsty Dunnett: The strength of evidence in (geosciences) education research: might a hierarchy do more harm than good?

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Below, Kirsty is discussing how it can potentially discourage efforts to improve teaching and teachers when we focus on the strength of evidence too much, and don’t value the developmental process itself enough. Definitely worth reading! :-)

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Kirsty Dunnett’s addition to my post on “A conceptual framework for the teaching and learning of generic graduate attributes” (Barrie, 2007)

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Haha, I ended my post this morning with “…but at that point I lost interest”, and apparently that’s a great call to action! Kirsty Dunnett, faithful guest blogger on my blog, volunteered to send me the summary of what I had missed! Thanks for sharing, Kirsty, the floor is yours:

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“Supporting students in higher education: proposal for a theoretical framework” Kirsty Dunnett summarizes De Ketele (2014)

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Who are you travelling with? A guest post by Kirsty Dunnett.

A summary and some thoughts on:

Supporting students in higher education: proposal for a theoretical framework
By J.-M. De Ketele (Université de Louvain, Belgium)

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Guest post by Chris Bore on #WaveWatching

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Chris Bore is one of the most loyal readers of my blog and has been for a long time, and now he wrote a beautiful post about #WaveWatching over on his own blog, and gave me permission to repost here. Thank you for loving #WaveWatching as much as I do, Chris!

A few years back I found oceanographer Mirjam Glessmer’s blog ‘Wave Watching’:

https://mirjamglessmer.com/wave-watching/

which is just what it says: a fascinating and insightful blog about watching waves – and what we can learn from doing so, not only about waves but about what they traversed, reflected off, diffracted around, broke over…

It spoke to me particularly because I was then watching waves almost obsessively: ripples on puddles, waves on our local lake, splashes from moorhens and coots and ducks on the canal; sea waves, coastal waves, every kind of wave. I wouldn’t quite say it risked losing me friends but people certainly got used to walking on and eventually looking back surprised to see me stopped staring at some interesting wave phenomenon. Continue reading →

Guest post by Kjersti Daae: Using voting cards to increase student activity and promote discussions and critical thinking

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I got permission to publish Kjersti Daae‘s iEarth conversation on teaching (with Torgny Roxå and myself in April 2021) on my blog! Thanks, Kjersti :-) Here we go:

I teach in an introductory course in meteorology and oceanography (GEOF105) at the geophysical institute, UiB. The students come from two different study programs:

Most students do the course in their third semester. They have not yet learned all the mathematics necessary to dive into the derivation of equations governing the ocean processes. Therefore, we focus on conceptual knowledge and understand the governing ideas regarding central ocean processes, such as global circulation and the influence of Earth’s rotation and wind on the ocean currents. The students need to learn how to describe the various processes and mechanisms included in the curriculum. I, therefore, use voting cards to promote student discussions during lectures.

I first heard about voting cards from Mirjam’s blog “Adventures in Oceanography and Teaching”. The method is relatively simple. You pose a question with four alternatives A,B,C,D, accompanied by different colours for easy recognition. The students have a printout each with the four letters on it.They spend a few minutes thinking about the question and prepare their answer. Then they fold their paper so that only one letter/colour shows, and hold it up and provide direct feedback to the teacher. The questions can, among others, be used to checking if the students understand a concept or let the students guess the outcome of something they haven’t learned yet.

However, I prefer to use voting cards to promote discussions among peers. This procedure is following the Think-pair-share method developed by Lyman (1981). By carefully selecting alternative answers, I can make it hard for the students to choose the correct answer, or the answers can be formulated so that the students can argue for more than one correct answer. When the students hold up their answers, they can look around at the other students’ responses and find someone with a different response than themselves. Then they can pair up and discuss why they answer differently and see if they can agree on one common answer before sharing their opinion with the rest of the class. During this exercise, the students practice talking about science and arguing for various answers/outcomes based on the voting cards’ questions.The exercises serve at least two purposes:

  1. The student practice answering/discussing relevant questions for the final exam.
  2. The students get active instead of listening passively to the lecturer.

Usually, I can see the students becoming very tired after 10-15 minutes of passive listening. These voting questions “wake up” the students, and after one such question, they tend to stay focused for another 10-15 minutes.

I think the voting cards work really well. When I display a question, the students usually move from a relaxed position to sitting more straight and preparing for being active. I can hear them discussing what they are supposed to. I also get very good feedback and responses in whole-class discussions/summaries following the discussions in pairs. Such summaries are especially interesting if multiple answers can be correct, depending on how the students argue. I can select responses from students based on their visible letters and make sure we can hear different solutions to the same question. During a semester, I see a clear development in the way students reflect on the various questions and express critical thinking governing oceanographic processes. The exercises show the students how important argumentation is. An answer with a well-founded argumentation and critical thinking is worth much more than just the answer/letter. My observation is consistent with Kaddoura (2013), who found that the think-pair-share method increased nursing students’ critical thinking.

Lyman, F. (1981). “The responsive classroom discussion.” In Anderson, A. S. (Ed.), Mainstreaming Digest, College Park, MD: University of Maryland College of Education.

Kaddoura, M. (2013). «Think Pair Share: A Teaching Learning Strategy to Enhance Students’ Critical Thinking», EducationalResearchQuarterly, v36 n4 p3-24

“Evaluating shallow water waves by observing Mach cones on the beach” — guest post by Felipe Veloso on his recent #WaveWatching article!

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Super excited to share a guest post today: Felipe is writing about his recent #WaveWatching article on “Evaluating shallow water waves by observing Mach cones on the beach”. I came across this article and was going to write a summary, but how much cooler is it to hear from Felipe himself? Thank you for being here! :)

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My name is Dr Felipe Veloso1 and I tremendously appreciate Dr Mirjam Glessmer invitation to write this post and letting me contribute to the terrific #WaveWatching collection!!

One of the spectacular things of #WaveWatching is that the observations are ubiquitous. It doesn’t matter if you live in Germany, USA, Japan or Chile. Oscillations and waves are there, whether you observe swimming pools, lakes, sea, or even a relaxing bathtub ready for you. In all cases, the water is always naturally oscillating in a comfortable dance combining up-and-down and back-and-forth movements. If you enjoy these natural phenomena like I do, invest some of your time and take a look to the wonderful #WaveWatchingWednesday and #KitchenOceanography collections that Mirjam has gathered for us. But there are some occasions that these wave phenomena are obscured to our naked-eye observations and a more careful revision is needed to figure out where these oscillations are hidden. A turbulent river coming down of a hill, or the simple passing of fast water flow in front of our eyes are some examples of “waves hidden at first sight”. Such situation occurred to me in the latest family vacations we had as a break from the lockdowns imposed by the pandemia. In particular, this situation became the reason of an article in Physics Education, and also the reason  of why I am writing these lines.

In an attempt to run away from the contaminated air of Santiago (the Chilean capital city, surrounded by mountains), we drove ~90 minutes to Viña del Mar city, to enjoy one week in the beach side. In this place, with the appropriate weather and personal calmness, families can enjoy the waves crushing the beach, the rising of children as “sand engineers”, and the “continuous fight” between these children and the ocean waves to avoid the destruction of the sand fortresses by the water. It is in this relaxing and family-friendly environment where my story begins.

My kids are playing in the sand and my feet are partially covered by water. After long time, we are able to come out from our houses after several months of mandatory quarantines, pandemic stress, and online teaching activities. In this particular moment, watching waves looks like a perfect panorama for me. Suddenly, the voice of my daughter Pilar wakes me up and asked me two questions: “Dad, what are you looking in the water?… and dad, why does the water creates those conical shapes at the end of the undertow current?” The first answer was easy. I was #WaveWatching. But the second answer was not so simple. What about those conical shapes?

Mach cones observed in the surface of undertow water produced by stationary millimeter grains/seashells in sand. Those feet belong to my daughter Pilar and myself. Image taken from the article.

Before her question, I haven’t thought on that. Rapidly, I realized I was observing a wave phenomena in a different and non-standard way. We were observing shock waves in the shape of Mach cones!! These cones appear when an object moves inside of a fluid with a relative velocity larger than the natural oscillation velocity of the fluid. In these situations, there is a shock occurring in the fluid itself. The tip of the cone (or V-) shape arises from the relative movement of the object, whereas the radial expansion of the wave creates the sides of the cone. This explains the formation of V-shapes in the water when a ship travels in a river, or when ducks swim in the lake. In the case of beach observations, the cones were originated by stationary small seashells or larger grains buried in the sand when the undertow water current returned back to the sea with depth not sufficient to immerse my toes.

Now, I am not really sure if my 8 years-old daughter or my 11 years-old son understood completely my explanations of waves and Mach cones. But, I am sure they understood that observing nature can be a fun and relaxing activity to enjoy in family vacations. As an exercise, I taught them how to compute the wave velocity by measuring these Mach cones. I also show them that we did not need any fancy or expensive equipment to accurately evaluate it. We only require interest and fascination on looking for an explanation of a natural phenomena… a phenomena that they could observe while enjoying the beach, the sand and the family time.

Family picture in Viña del Mar. My beautiful wife Alicia, my kids Diego and Pilar and myself. And of course, our dear dog Chewbacca trying to run away from the camera.

Further details can be found in the paper: Felipe Veloso (2021) “Evaluating shallow water waves by observing Mach cones on the beach” Phys Education 56, 054001.

  1. @fvelosoe in Instagram and Twitter