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Jon Fant

@fantasticmaths

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16.08.2024
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Latest posts by Jon Fant @fantasticmaths

These were created using latex code and in the end I just edited the latex labels rather than redrawing each one.

I got a little lazy, but appreciate the detailed eye!

04.02.2026 10:38 👍 1 🔁 0 💬 0 📌 0
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Ratio tables and Similar Shapes Now we’ve created a unified model of unit conversions from linear to volume conversions using the ratio table as our scaffold.

This week I’ve written about how we can apply the approach we took with metric unit conversions for area and volume onto area and volume of similar shapes.

open.substack.com/pub/fantasti...

04.02.2026 06:43 👍 5 🔁 2 💬 1 📌 0

This would have been my question

30.11.2025 08:44 👍 1 🔁 0 💬 0 📌 0
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I used to talk about 80-hour weeks.

Now I brag about weekends with my family.

No Sunday guilt or late night planning.

Same results. Happier human. That’s what the right tools do.

Just you... amplified. 🔋

mathswhiteboard.com

#iTeachMaths #EdTech #TeacherBurnout

23.11.2025 06:57 👍 5 🔁 2 💬 1 📌 0
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This weeks post is a two for one. I question when scaffolding isn’t actually having the desired impact. I give an example of a commonly used scaffold for unit conversions which I now think doesn’t actually support our students in the long run.

substack.com/@fantasticma...

23.11.2025 12:13 👍 0 🔁 0 💬 0 📌 0

Grouping/setting students to enable mastery as that would be one of the conditions for mastery akin to Blooms proposal for mastery.

Opposed to the problematic definitions of which now exist according to EEF.

22.11.2025 14:43 👍 0 🔁 0 💬 0 📌 0
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The -ths Factor: Why Teaching Prefixes and Suffixes is the Key in Place Value Disciplinary Literacy of place value

On Friday I write about the connection between the suffix in place value and the prefixes in metric units.

Interested in reading more?

open.substack.com/pub/fantasti...

16.11.2025 17:52 👍 3 🔁 2 💬 1 📌 0

Is there an order to the leaderboard?

15.11.2025 20:18 👍 0 🔁 0 💬 1 📌 0
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We are hiring a Director of Education to join the Chartered College of Teaching team! 📢

Learn more about the role here: https://chartered.pulse.ly/qlatto3crv

#JobSearch #HiringNow #Jobs #CareerChat #Recruiting #Careers #Hiring #Teacher #Education #CareerProgression #ProfessionalDevelopment

14.11.2025 17:08 👍 0 🔁 2 💬 1 📌 0

Deep learning doesn’t have to be stumbled upon through inquiry it can be specifically taught and connected.

The opportunity cost of inquiry learning is too high to promote in this manner.

09.11.2025 21:15 👍 2 🔁 0 💬 0 📌 0

If you’re still using Hattie places direct instruction approach at 0.6. Mastery learning and explicit teaching statergies at 0.57. I suspect you’re encouraging explicit teaching rather than DI programs.

Where as inquiry and cooperative learning are at 0.4.

09.11.2025 21:13 👍 0 🔁 0 💬 0 📌 0

Non germane cognitive load eg what font do I need to use. The new version of bubble writing. Even who is going to do what. Oh that persons job is to watch the others do the work and therefore the learning?

Enquiry learning, hard pass, On the research front.

EEF haven’t ranked it.

09.11.2025 21:08 👍 0 🔁 0 💬 2 📌 0

Remembering that a DI style approach is highly interactive. Ensures that all students come along the journey. Ensures that everyone is thinking hard. Ensures that attention is in the right place for learning to happen.

Enquiry does none of this, it introduces cognitive load in a variety of ways

09.11.2025 21:02 👍 0 🔁 0 💬 1 📌 0

Disagree for children in schools. They would move into the gradual release phase of direct instruction. Really true enquiry is going to be when beyond novice, beyond simple automaticity.

Stick with direct instruction approach but move into the gradual release phase.

Stick with what works.

09.11.2025 21:00 👍 0 🔁 0 💬 1 📌 0

@cipher-challenge.bsky.social is it possible to filter the leaderboard by region?

08.11.2025 15:48 👍 0 🔁 0 💬 1 📌 0
£25.20 with 9 division calculations around it (from 2 to 10)

£25.20 with 9 division calculations around it (from 2 to 10)

A great total to have if you want to split a bill evenly in a restaurant.

01.11.2025 12:57 👍 16 🔁 4 💬 1 📌 0
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The Dual Coding Delusion How dual coding theory became a victim of edu-mythology and why adding visuals won’t make your teaching more memorable.

A pictures worth a 1000 words, right? But when words and pictures pull in different directions, learning falls apart. My latest piece looks at where dual coding goes wrong and how to make visuals actually help students think. open.substack.com/pub/daviddid...

01.11.2025 07:19 👍 19 🔁 6 💬 1 📌 1
Copy of the book cover for the Maths and Dyscalculia Assessment

Copy of the book cover for the Maths and Dyscalculia Assessment

Recently I was given access to a great new tool for identifying & supporting dyscalculia & other maths difficulties. Created by Rob Jennings, co-founder of the @dyscalculianetwork.bsky.social, & Jane Emerson, founder of Emerson House.
Read about it: educatingmrmattock.blogspot.com/2025/10/new-...

29.10.2025 15:43 👍 11 🔁 3 💬 3 📌 0
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AQA - now in partnership with Dr Frost Maths.

We’ve teamed up with Dr Frost Maths, the award-winning online platform for students up to age 18, to make AQA exam preparation simpler and more effective.

Discover your new maths tools: https://ow.ly/1lge50Xihim

27.10.2025 14:03 👍 7 🔁 3 💬 2 📌 0

Have you seen the ones from @mathswhiteboard.bsky.social where you can create your own pixel art?

22.10.2025 17:55 👍 3 🔁 0 💬 2 📌 0

On half term for this and next week, but please have a look at the back catalogue of my language in maths blogs, and let me know what you want to see next term!

22.10.2025 06:30 👍 2 🔁 1 💬 1 📌 0

@atulrana.bsky.social be interested to know what you think of this one?

18.10.2025 10:50 👍 1 🔁 0 💬 1 📌 0
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Disciplinary Literacy: A difference that simply adds up. The planned and purposeful journey of mathematics: a deep dive into the language of addition and subtraction.

And it would probably help if I shared it with a link.

open.substack.com/pub/fantasti...

18.10.2025 05:47 👍 1 🔁 0 💬 0 📌 0
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Yesterday I posted about the trouble with the language around addition and subtraction. Offering my thoughts around the impact of the grammatical structure.

18.10.2025 05:45 👍 4 🔁 1 💬 2 📌 0

@cipher-challenge.bsky.social very excited to have 3 teams in the first time we are ever taking part in the national cipher challenge!

17.10.2025 19:51 👍 0 🔁 0 💬 1 📌 0

We’ve got one more week!

17.10.2025 19:49 👍 1 🔁 0 💬 0 📌 0
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Jon Fant | Substack Secondary Head of Mathematics’ journey from procedural methods to coherent models, consistently taught. Transforming confidence in students through deep conceptual understanding.

I’m writing about my own journey here: substack.com/@fantasticma...

17.10.2025 05:33 👍 1 🔁 0 💬 0 📌 0

Are you planning to introduce some degree of direct/ explicit instruction with example problem pairs and fluency practise.
Are you going to go down a conceptual/visible approach like @mrmattock.bsky.social or more of a Kris Boulton style of approach.

17.10.2025 05:32 👍 0 🔁 0 💬 1 📌 0

Once you’ve decided what you think the research says mastery is or isn’t. Then you need to consider the pedagogical approach that will take you towards that journey.
These pedagogical approaches can probably be introduced in the interim as they will have their own gains.

17.10.2025 05:27 👍 0 🔁 0 💬 1 📌 0
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Mastery learning In mastery learning, learning outcomes are kept constant but the time needed for pupils to become proficient is varied.

First you need to try and decipher what you think mastery is. There is an EEF guidance document. educationendowmentfoundation.org.uk/education-ev...

Confusingly I think @markmccourt.bsky.social book would be more likely to describe mastery learning that teaching for mastery on the EEF definitions.

17.10.2025 05:25 👍 2 🔁 0 💬 1 📌 0