Schools use modelling across many disciplines, such as writing, handwriting, mathematical strategies, and science experiments. It’s a powerful strategy that can be used across many different subjects, and computing is no different.
As we have been developing units for the Teach Computing Curriculum (ncce.io/tcc), we have been reflecting on the tried and tested techniques that help make computing lessons a success. In this article, I will share some of our top tips for modelling.
Perhaps the biggest benefit of modelling is the confidence and competence that teachers gain from using the software. In the Teach Computing Curriculum Year 6 (ages 10 to 11) 3D Modelling unit, learners are shown how to create a 3D shape and change the viewing angle within the 3D modelling software Tinkercad. For teachers who are new to 3D modelling, changing the viewing angle may be something that they have not come across before.
Through pre-lesson preparation, and of course, through using the software when modelling, teachers may encounter misconceptions, errors, and perhaps shortcuts that the learners might make in their own use. For example, in Tinkercad, teachers can click on the viewing cube to jump to different views. As their own confidence improves, supporting the learners with their errors or misconceptions will become easier.
If teachers provide a monologue — or ‘think aloud’ — as they model, learners get the opportunity to observe expert thinking that they wouldn’t usually have access to. It allows learners to follow more closely what the teacher is doing and why they are doing it. More precisely, it can reduce the extra cognitive load of having to deconstruct each step for themselves.
As teachers know their own learners best, they can tailor the language they use when modelling, to make it as beneficial as possible for their particular learners. This ensures that teachers can meet their learners’ needs in a more targeted way.
Questioning is a key part of modelling — this includes both the teacher’s questioning of their learners to draw out understanding, and the learners’ questioning of the skills and processes the teacher is using. Modelling can enable teachers to give context to their answers to the questions, ensuring they are able to ‘show’ alongside the ‘tell’. This will help to make their answers more visual and concrete.
Additionally, the freedom of modelling ensures that teachers are able to meet the needs of all the learners in the room. This could mean revising an area that wasn’t fully understood by some, or perhaps moving at a slower or quicker pace, depending on the learners’ level of understanding. For example, in lesson one of the 3D Modelling unit, teachers could break up the content in the video into smaller chunks, perhaps allowing the learners to get to grips with the viewing angle before introducing the zoom buttons.
In line with the benefit of greater freedom discussed previously, modelling also allows for more impromptu learning. As students ask questions, teachers may need to traverse different areas of the software, or challenge new thinking around a skill they hadn’t previously thought about. Using the freedom provided by modelling can lead to a deeper level of understanding. Equally, it can reinforce the skills used in previous lessons, giving learners the chance to consolidate that learning as they progress to the next stage.
As teachers narrate their modelling, it can also bring to the forefront things they do instinctively. Learners can pick up on these things, such as keyboard shortcuts (copy, paste, and duplicate come to mind!) that teachers might use naturally. Modelling can also lead to exploration of a skill that might benefit learners but wasn’t originally planned for the lesson. These are things we do all the time when using new software or learning new things, but we might not always use the opportunity to share them.
By demonstrating computing experiences live with their learners, teachers can encourage the sharing of mistakes, both intentional and unintentional. Making and demonstrating mistakes is OK — in fact, it should be celebrated! Allowing learners to see that their teachers aren’t immune to mistakes can be encouraging for less confident learners and help them to build resilience. More importantly, it enables learners to see how to respond to mistakes, particularly when combined with the ‘thinking aloud’ approach mentioned previously. This can be a powerful tool for encouraging perseverance.
By sharing mistakes and thinking aloud, teachers can guide their learners through strategies to overcome a range of obstacles. Use phrases such as: “When I first looked at this problem, I didn’t know where to start” and, “It’s OK to feel frustrated at this point; I often do.”
Video demonstrations vs live modelling
As well as live modelling, there is also the option to demonstrate software using prerecorded videos. This means that you can show the video to learners and they can follow along and learn the skills you need them to know. However, many of the benefits to modelling, such as impromptu learning and improved confidence, will not be gained in this way.
Recorded video definitely has a place in the classroom — particularly in the current teaching context — but modelling these skills yourself, making mistakes, and developing ideas as you go are invaluable ways to share learning experiences. If you do show your learners videos instead of using live modelling, here are some tips for including the modelling approaches:
Watch the video before the lesson and practise the thinking aloud approach
Share the video with the learners and think aloud as the video is shown; allow the learners to attempt the task before asking them to share their own modelling of it
Punctuate the video with your own questions, and don’t be afraid to pause to answer questions posed by the learners
Throughout our work on the Teach Computing Curriculum, my colleagues and I recorded videos to model key skills. Our aim was to ensure that the content was as accessible as possible for the full range of teachers who may use it.
Though modelling may take longer than displaying a prerecorded video, it is a great way to share the learning experience. In my view, it has many benefits over the more passive prerecorded approach. Hopefully, many teachers will watch these videos and gain the confidence to give modelling a try.
Modelling is a journey, and teachers inevitably won’t get it right every time — but sharing that experience with the learners may turn out to be the most powerful part of the exercise.