Physical Computing KS2: Crumble Training – January 2022

Two opportunities to attend the TeachComputing Crumble course for KS2 (aimed at Y5 and Y6 teachers):

Tuesday 18th January, Queen Anne’s School in Reading – 1pm – 3pm

Tuesday 18th January, Queen Anne’s School in Reading – 4pm – 6pm

About the course:

The course aims to introduce teachers to the Crumble micro controller; a lovely piece of kit that is so open ended, pupils can create all kinds of robotic autonomous systems.

If you want to know more in general about Physical Computing, have a look at my blog post:

Physical Computing: Where do I start?

Physical computing involves programming digital devices to sense and interact with the world – an engaging alternative to screen-only activity. It touches upon many areas of the computing curriculum, bringing subject knowledge and programming skills to engaging and enjoyable classroom activities.

The Crumble Controller is an easy-to-use programmable device, ideal for physical computing in primary schools. It is capable of driving two motors. With 4 input / output terminals, children can connect LEDs, switches and other interesting add-ons.

During this CPD you’ll explore how Crumble can be used in the classroom, with blocks of code ‘snapping’ together in an easy-to-use, Scratch-like environment suitable for key stage 2. You’ll find out how to setup the device, how to make use of input and output terminals and explore how to use the device with children. The CPD will help you gain confidence in teaching using Crumble, and the free Teach Computing Curriculum.

The National Centre for Computing Education has developed a Crumble physical computing kit that can be borrowed from your local Computing Hub, following your CPD.

Who is it for?

This course is aimed at classroom teacher and subject leaders of computing, looking to develop physical computing approaches in the KS2 classroom.

How will you learn?

Hands-on experiential learning with the collaborative support of your peers, led by an experienced facilitator. The course will model teaching approaches that can be taken back to the classroom.

How long is the course?

This course consists of one 2 hour session.

Primary Physical Computing Training – Crumble in KS2

I had the honour of authoring the KS2 Physical Computing course for the NCCE over the Spring and got to deliver the course for the first time this summer term!

Getting to grips with the Crumble
Build, wire, code, watch!


The course aims to introduce teachers to the Crumble micro controller; a lovely piece of kit that is so open ended, pupils can create all kinds of robotic autonomous systems.

If you are interested in booking yourself on the course, have a look to see if there are any in your area:

Teach Computing: Introduction to Physical Computing – KS2 Crumble

If you want to know more in general about Physical Computing, have a look at my blog post:

Physical Computing: Where do I start?

Apart from having a lot to squeeze in to a short amount of time, the course was a great success and the participants (teachers from KS2 and KS3!) left with confidence to begin delivering physical computing lessons with their classes.

There will be more of these courses put on in the very near future; there will also be the opportunity to loan (for free) a class set of Crumble kits for your school from your local computing hub. Click here for more information: NCCE Physical Computing Kits for free hire

Year 5 Crumble Creations – 2021

My fabulous Year 5 pupils have been busy applying their skills and knowledge to design their own robotic systems!

Following the 4 levels of abstraction (see below for links on my approach to physical computing), they have gone from design algorithm…


To coding…


To building and wiring…


To finally running the code and evaluating!!


I am so proud of them and their creativity!! Let’s hope this inspires pupils and teachers across the world!

If you’d like to read more and see other examples of pupil’s Crumble creations, please take a look at my approach to teaching Physical Computing.

DIY Crumble Cart!

Teaching Physical Computing is mandatory in UK Primary Schools (See my previous post on Physical Computing: Where do I start? for more information)

One of the best products out there to deliver this fun and exciting part of the curriculum, is Redfern’s Crumble micro controller.

Here are instructions and resources for you to build your own little handy Crumble Cart. Just big enough to carry around your battery pack, Crumble and maybe even a couple of crumbs!

You will need: Printed template onto A4 card (or make it yourself from the measurements!), a pencil and some blue tack to make the holes and some scissors.

This is designed for two Crumble Motors, which can be bought along with everything else, from Redfern Electronics.

Watch the video for instructions and an example of how you can use it!

Just in case you’re interested, here is the code I used to program the cart as seen in the final part of the demo video…

Crumble Code for the Cart Demo in the Video…

Print this full size on to A4 paper (borderless if possible) then follow the instructions in the video.

If you prefer to draw your own, here are the measurements!

You can also head here to the official STEM resource library to download it: Build your own Crumble Cart!

KS1 and KS2 training in specialist computing areas

Primary Computing remote CPD courses
Primary Computing Remote CPD Courses

Phil Bagge and I are delivering remote training sessions on some of the more niche areas of the computing curriculum. From Physical Computing to 3D design, take you pick in this quality (yet cheap – only £40) training opportunity.

Download the PDF flyer below and you can click on each course title to book on.

For even more CPD opportunities in both primary and secondary, please visit:

Park House School CPD Network – remote and online training

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