iiinova — where your digital self keeps evolving

Reposted by Bernard Rand

Adam Boxer @adamboxereducation.bsky.social · 25/02/2025

🚨Incredibly excited to announce this job 🚨 Are you interested in driving the future of professional development? Helping teachers everywhere get better faster? We changed the game on retrieval practice, we're going to do it on CPD. APPLY HERE Please share if you can 🙏🙏

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Bernard Rand @bernardrand.bsky.social · 25/02/2025

We have a lovely class set of little ripple tanks that allow them to play around and observe wave behaviour

Two adjacent dippers produce circular wavefronts that produce an interferance pattern showing regions of constructive and destructive interference.

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Reposted by Bernard Rand

Helen Reynolds @helenrey.bsky.social · 24/02/2025

Even though they say 'I don't need to use that' when I introduce 'squashy cos', by the end of the year they all use squashy cos to find components. #iteachphysics

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Bernard Rand @bernardrand.bsky.social · 24/02/2025

I go for the coscrodile’s jaws are around the angle!

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Alex Weatherall @aweatherall.bsky.social · 23/12/2024

Day 23 - As I sit untangling my daughters Newton's cradle (!!!!) I need something relaxing and mindless to accompany the infuriating task. Luckily I have this video of a giant pendulum wave with notes for each swing. #iteachphysics #adventofphysics youtu.be/b8O1jlHyKpU

youtu.be

Large Pendulum Wave - Glow Eindhoven 2013

YouTube video by Kermiscity

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Bernard Rand @bernardrand.bsky.social · 22/12/2024

Well now I feel old. I get sry is sorry but what is nvm? 🤣

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Bernard Rand @bernardrand.bsky.social · 21/12/2024

I like this one as a predict, observe and explain exercise to hammer home force on a current in a magnetic field and Fleming’s Left Hand Rule.

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Bernard Rand @bernardrand.bsky.social · 19/12/2024

But audio cassettes are back on sale now so I’m not sure this will be any time soon.

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Bernard Rand @bernardrand.bsky.social · 19/12/2024

But isn’t the speed of light invariant 😉 Also there are materials with a higher refractive index.

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Bernard Rand @bernardrand.bsky.social · 19/12/2024

Little do they know, you are the OG.

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Bernard Rand @bernardrand.bsky.social · 12/12/2024

I’ve turned up some real gems from @helenrey.bsky.social’s spreadsheets. A really great resource when first planning or refining your teaching of a topic.

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Bernard Rand @bernardrand.bsky.social · 04/12/2024

Also although this sounds ridiculous, cover it in delicate glass baubles.

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Bernard Rand @bernardrand.bsky.social · 04/12/2024

It looks like you are beyond the easy solution (don’t have a Christmas tree and cats in the same house), Can I advise a water pistol?

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Bernard Rand @bernardrand.bsky.social · 29/11/2024

😉 I guessed something like that/the.

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Bernard Rand @bernardrand.bsky.social · 29/11/2024

How do you service your VdG? New belt? Is there more to it? Ours aren’t working that well. The belt speed seems quite variable even with new belts. Might we need to replace motors or brushes?

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Bernard Rand @bernardrand.bsky.social · 29/11/2024

Wow, a lot of hard work has obviously gone into this and it features so many great ideas explained really well with links and videos. If you want new ideas for teaching magnetism from KS3-5 this has plenty.

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Reposted by Bernard Rand

Helen Reynolds @helenrey.bsky.social · 26/11/2024

Don't know whose this is, but it's up there for the best physics meme ever. #iteachphysics

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Bernard Rand @bernardrand.bsky.social · 23/11/2024

How do you define ethnically British and what would you like to be done to make it ethnically British again?

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Bernard Rand @bernardrand.bsky.social · 22/11/2024

Just some thick, bare copper. Don’t know the swg I’m afraid but I suspect the thicker the better.

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Reposted by Bernard Rand

Bernard Rand @bernardrand.bsky.social · 21/11/2024

Here it is going in circles, with a bit of help!

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Reposted by Bernard Rand

Stuart Hayward @stuartteachphys.bsky.social · 21/11/2024

Depends a lot on the framing and impact. There's a lot to be said for lay noticing/questioning (I saw this... what's the thinking?) One of the problems with lesson observation is that we have entangled observing and evaluating, and then put a lot of weight on those evaluations.

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Bernard Rand @bernardrand.bsky.social · 21/11/2024

I like this a lot. Non judgemental observations are really useful feedback. Direct suggestions probably require someone with significant domain knowledge to be useful and instructive.

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Bernard Rand @bernardrand.bsky.social · 21/11/2024

Here’s another hypothetical. You are a tailor with training and experience of measuring people and carefully stitching together fitted clothes. If someone who hadn’t ever sewn anything came and made suggestions of how to do your job better how would you value their feedback?

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Bernard Rand @bernardrand.bsky.social · 21/11/2024

Rejecting advice and feedback out of hand is not great, but questioning feedback because the provider doesn’t have sufficient understanding and insight to give useful feedback seems very sensible to me.

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Bernard Rand @bernardrand.bsky.social · 21/11/2024

I’d listen to their feedback and potentially respond to it but on the whole I suspect I’d be fairly sceptical.

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Bernard Rand @bernardrand.bsky.social · 21/11/2024

Here it is going in circles, with a bit of help!

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Bernard Rand @bernardrand.bsky.social · 21/11/2024

A couple of students in my enrichment group have made a nice linear motor. #iteachphysics #chatphysics

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Bernard Rand @bernardrand.bsky.social · 20/11/2024

Coherence means they are produced with a constant phase difference. When two coherent waves superpose the phase difference will vary with path difference from the two sources as in two source interference and standing waves. The two are not exclusive.

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Bernard Rand @bernardrand.bsky.social · 20/11/2024

Just wanted to drop in and say a huge thank you. Your wave animations have been helping me teach waves for many years. You’ve done a great job with them.

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Bernard Rand @bernardrand.bsky.social · 20/11/2024

@drussellpsu.bsky.social has some brilliant animations for explaining waves for A level Physics. I’ve been using them for years as they are a brilliant aid for helping students understand the fundamental nature of waves. #iteachphysics #chatphysics

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Bernard Rand @bernardrand.bsky.social · 18/11/2024

Here are the KS3 BEST quizzes from York Uni converted to Google Forms by myself, @helenrey.bsky.social and Dr Sue Thaw. drive.google.com/drive/folder...

drive.google.com

BEST MCQ FORMS - right click files and make a copy - Google Drive

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Bernard Rand @bernardrand.bsky.social · 18/11/2024

@alomshaha.bsky.social has some beautiful explanations of some great physics demos here. #iteachphysics #chatphysics

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Bernard Rand @bernardrand.bsky.social · 18/11/2024

Kicking a concrete football. A nice question for getting students thinking about force and momentum carefully.

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Reposted by Bernard Rand

Michael Freeman @afreeparticle.com · 18/11/2024

In case it is helpful to all you teachers, here is my... Visibly Random Group Generator v7.3 🍎 Free, no ads 🍎 Set # of groups or group size 🍎 Checkboxes for absences 🍎 Add pairs of Ss that can't work together, be alerted of conflicts 🍎 Editable names & color to match classroom Link in reply 🧬🥽🎢♾️

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Bernard Rand @bernardrand.bsky.social · 18/11/2024

“But on the other hand I’m thrifty” 🤣🤣🤣

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Bernard Rand @bernardrand.bsky.social · 17/11/2024

Great word, this is up there with petrichor for me.

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Bernard Rand @bernardrand.bsky.social · 17/11/2024

Sorry to break this to you but I think you actually have a pet Zebra.

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Bernard Rand @bernardrand.bsky.social · 17/11/2024

I don’t think it’s just the resistivity. I suspect a decent amount of the heat generated is from hysteresis during constant magnetisation and demagnetisation rather than just the induced currents.

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Bernard Rand @bernardrand.bsky.social · 16/11/2024

Building little motors with batteries and neodymium magnets is great fun.

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Reposted by Bernard Rand

Sam Freedman @samfr.bsky.social · 16/11/2024

New post just out: "Dropping Out" Why improvements to school standards are at serious risk. (Free to read) open.substack.com/pub/samf/p/d...

open.substack.com

Dropping Out

Why improvements in school standards are at serious risk

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Bernard Rand @bernardrand.bsky.social · 16/11/2024

Not much detail in here but if you’ve got a low AC voltage supply then connect all the coils in parallel (I had a 0-25V). Then it’s mainly a case of playing with the inductance using cores and shading of the poles with different thicknesses of aluminium. docs.google.com/file/d/16xkg...

docs.google.com

Drinks Can Induction Motor.docx

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Bernard Rand @bernardrand.bsky.social · 16/11/2024

Do you have a set up already? docs.google.com/file/d/16xkg...

docs.google.com

Drinks Can Induction Motor.docx

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Bernard Rand @bernardrand.bsky.social · 16/11/2024

It is indeed, if you tap on the video you should be able to see it.

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Bernard Rand @bernardrand.bsky.social · 16/11/2024

Forgot to hashtag! 🤦‍♂️

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Bernard Rand @bernardrand.bsky.social · 16/11/2024

The drinks can induction motor. One of my favourite demos, putting Faraday’s and Lenz’s laws together in a fairly complex situation. To get them really thinking hard you can ask why the current trip on the supply only goes once it spinning at a good rate?

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