Archive for July, 2021

Announcing the inaugural Illinois Computer Science Summer Teaching Workshop: Guest blog post from Geoffrey Challen

We are excited to invite you to the inaugural Illinois Computer Science Summer Teaching Workshop: The 2021 workshop will be held virtually over two half-days on August 10–11, 2021. The workshop is free to attend, and teaching faculty, research faculty, as well as graduate and undergraduate students are all invited to participate—either by presenting, or by joining the conversation. The deadline to submit an abstract is Tuesday July 20th.

Our goal is to bring together college instructors who are engaged with teaching computer science to discuss best practices, present new ideas, challenge the status quo, propose new directions, debunk existing assumptions, advocate for new approaches, and present surprising or preliminary results. This year’s theme is “How the Pandemic Transformed Our Teaching“, allowing participants to reflect on the difficult year behind us as we prepare to return to classrooms next fall. We are excited to welcome Professors Margo Seltzer (UBC), Tiffani Williams (Illinois), Susan Rodger (Duke), Nate Derbinsky (Northeastern), and David Malan (Harvard) as invited speakers.

July 17, 2021 at 10:51 am 2 comments

Considering the Danish Informatics Curriculum: Comparing National Computer Science Curricula

Michael Caspersen invited me to review a chapter on the Danish Informatics curriculum (see a link here). He asked me to compare it to existing school CS curriculum with which I’m familiar. That was an interesting idea — how does anyone relate curricula across diverse contexts, even between nations? I gave it a shot. I most likely missed, in that there are many curricula that I don’t know or don’t know well enough. I welcome comments on other CS curricula.

The Danish Informatics curriculum is unique for its focus on four competence areas:

  • Digital empowerment which describes the ability to review and critique digital artifacts to ask where the strict demands of a computational system may not serve well the messy world in which humans live.
  • Digital design and design processes which describes the ways in which designers come to understand the problem domain for which we design digital artifacts.
  • Computational thinking and modeling which describes how data and algorithms are used to construct digital solutions and artifacts.
  • Technological knowledge and skills which describes the tools (e.g., programming languages) and infrastructures (e.g., computer systems, networking) used to construct digital solutions and artifacts.

I am not familiar with any curriculum that encompasses all four competencies. I’m most familiar with elementary and high school curricula in the United States. Each US state has control over its own school system (i.e., there is no national curriculum) though many are influenced by recommendations from the Computer Science Teachers Association (CSTA) (see link here) and the K12 CS Framework (link here).

In the United States, most computing curricula focus on technological knowledge and skills and computational thinking and modeling. The former is important because the economic argument for computing education in schools is the most salient in the United States. The latter most often appears as a focus on learning computing skills without programming, e.g., like in the CS Unplugged activities from Tim Bell at the University of Canterbury (link).

Modeling is surprising rare in most state curricula. Calls for modeling and simulation are common in US mathematics and science education frameworks like the Next Generation Science Standards (link), but these have influenced few state curricula around computing education. Efforts to integrate computing to serve the needs of mathematics and science education are growing, but only a handful of states actively promote computing education to support mandatory education. For example, Indiana has include computing learning objectives in their state’s science education standards, in order to develop more integrated approaches.

I don’t know of any state curricula that include digital empowerment nor digital design and design processes. These are critically important. Caspersen’s arguments for the Danish Informatics curriculum build on quotes from Henry Kissinger and Peter Naur, but could also build on the work of C.P. Snow and Alan Perlis (the first ACM Turing Award laureate). In 1961, Snow and Perlis both argued for mandatory computing (though at the University level). Perlis argued that computing gave us new ways to understand the world. He would have recognized the digital design and design processes competency area. Snow warned that everyone should learn computing in order to understand how computing is influencing our world. He wrote: “A handful of people, having no relation to the will of society, having no communication with the rest of society, will be taking decisions in secret which are going to affect our lives in the deepest sense.” He would recognize the concerns of Kissinger and Naur, and the importance of digital empowerment.

The Danish Informatics curriculum is unique in its breadth and for considering the social aspects of computing artifacts and design. It encompasses important needs for citizens of the 21st Century.

July 12, 2021 at 7:00 am 6 comments

There is transfer between programming and other subjects: Skills overlap, but it may not be causal

A 2018 paper by Ronny Scherer et al. “The cognitive benefits of learning computer programming: A meta-analysis of transfer effects” was making the rounds on Twitter. They looked at 105 studies and found that there was a measurable amount of transfer between programming and situations requiring mathematical skills and spatial reasoning. But here’s the critical bit — it may not be casual. We cannot predict that students learning programming will automatically get higher mathematics grades, for example. They make a distinction between near transfer (doing things that are very close to programming, like mathematics) and far transfer, which might include creative thinking or metacognition (e.g., planning):

Despite the increasing attention computer programming has received recently (Grover & Pea, 2013), programming skills do not transfer equally to different skills—a finding that Sala and Gobet (2017a) supported in other domains. The findings of our meta-analysis may support a similar reasoning: the more distinct the situations students are invited to transfer their skills to are from computer programming the more challenging the far transfer is. However, we notice that this evidence cannot be interpreted causally—alternative explanations for the existence of far transfer exist.

Here’s how I interpret their findings. Learning program involves learning a whole set of skills, some of which overlap with skills in other disciplines. Like, being able to evaluate an expression with variables, once you know the numeric value for those variables — you have to do that in programming and in mathematics. Those things transfer. Farther transfer depends on how much overlap there is. Certainly, you have to plan in programming, but not all of the sub-skills for the kinds of planning used in programming appear in every problem where you have to plan. The closer the problem is to programming, the more that there’s an overlap, and the more we see transfer.

This finding is like a recent paper out of Harvard (see link here) that shows that AP Calculus and AP CS both predict success in undergraduate computer science classes. Surprisingly, regular (not AP) calculus is also predictive of undergraduate CS success, but not regular CS. There are sub-skills in common between mathematics and programming, but the directionality is complicated.

We have known for a long time that we can teach programming in order to get a learning effect in other disciplines. That’s the heart of what Bootstrap does. Sharon Carver showed that many years ago. But that’s different than saying “Let’s teach programming, and see if there’s any effect in other classes.”

So yes, there is transfer between programming and other disciplines — not that it buys you much, and the effect is small. But we can no longer say that there is no transfer.

July 5, 2021 at 7:00 am 2 comments

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 9,002 other followers


Recent Posts

Blog Stats

  • 1,875,054 hits
July 2021

CS Teaching Tips