^{th}gems post. This is where I share some of the latest news, ideas and resources for maths teachers.

**1. Inverse Proportion**

I really like this tweet from @catrionateaches. When teaching inverse proportion I always talk about constant products but then I head straight into the formula y = k/x. Catriona suggests a subtle change in method.

**2. Graph Transformations**

It's great to see a new resource published for teaching graph transformations - I always find that this is the GCSE topic for which it's trickiest to find suitable resources, because many tasks still include stretches (these were removed from the syllabus back in 2017 - GCSE now just covers reflections and translations).

Do check out MathsPad's full range of interactive tools - some of them are free to use even if you don't subscribe (you really should subscribe to MathsPad though!).

**3. GeoGebra**

⚖️ GEOGEBRA RESOURCE! 📏

— GeoGebra (@geogebra) February 27, 2024

Try this FREE GeoGebra Exploration resource to convert units within a given system of measurement. Check it out! https://t.co/RQuWgxlNTR#mtbos #iteachmath #math #mathematics pic.twitter.com/qbp4U8DIFj

📦🐭 GEOGEBRA RESOURCE! 🥡🐱

— GeoGebra (@geogebra) February 27, 2024

Try this FREE GeoGebra Practice resource to draw box-and-whisker plots from a set of data. Check it out! https://t.co/VsqOGblJ2P#MTBoS #iteachmath #math #statistics pic.twitter.com/GAz9gbyLAR

🦾 GEOGEBRA RESOURCE! 🎰

— GeoGebra (@geogebra) March 4, 2024

Try this NEW & FREE GeoGebra Exploration resource to convert a number from standard form to expanded form one place value at a time. Check it out! https://t.co/vAIXvL5g48#MTBoS #iteachmath #math #mathematics pic.twitter.com/UXSN3RHQ69

**4. Pythagoras**

@nathanday314 shared a clever set of questions on Pythagoras' Theorem. There's a lot of challenge here (check out Question 12). Question 3 is deliberately impossible, and note the subtle differences between Questions 3, 4 and 5.

**5. Prime Factors**

**Update**

Here are some other things you might have missed:

- The NCETM continue to publish their set of secondary mastery professional development materials. Their first set of Key Stage 4 materials focuses on numerical structure. These materials contain lots of teaching ideas that are well worth exploring.
- @1stclassmaths has shared GCSE Predicted Paper 1 for both Edexcel and AQA. After Paper 1 takes place in May he will publish Predicted Paper 2s, and after Paper 2 he will publish Predicted Paper 3s. These papers will be very high quality so I recommend following @1stclassmaths for updates.
- @cclay8 has shared some more of her excellent calculator guides for the new Casio model.
- @MattTheApp continues to share numerous resources for GCSE preparation on Maths White Board including maths formula sheet familiarisation tasks.
- @AMercerMaths shared a fantastic example of a curriculum booklet on diagonals in quadrilaterals.

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