Dale Chapman
@dalechapman.bsky.social
380 followers 190 following 270 posts
KS5 Lead for Mathematics at an 11-18 school in Wiltshire. Resource Creator for Dr Frost Learning.
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dalechapman.bsky.social
Very interesting. In UK exams they must use correct language for credit in exams, including ‘alternate segment theorem’, ‘angles in the same segment are equal’ and more
dalechapman.bsky.social
Agreed this strategy is good- wish they’d rename it to something like the chord-tangent theorem
dalechapman.bsky.social
Are you a teacher in the US? I believe you may refer to this angle rule differently. The phrasing is exactly what our students find tricky- I don’t think it’s a very good name but it’s what they need to know.

These are pairs of angles and their partner in the alternate segment
dalechapman.bsky.social
Work in progress - identify the angle in the alternate segment
Inspired by my colleague Rushni whose Year 11s were struggling to do such a thing.

comments/questions/thoughts welcome

#MathsToday
dalechapman.bsky.social
And where, might I ask, is that marvellous shirt from?
dalechapman.bsky.social
Stuck on tbis ESAT problrm-- is anyone willing to give me some prompts to get started?
dalechapman.bsky.social
Today's Polygons lesson featuring a Gemini created cartoon
dalechapman.bsky.social
As always, you provide. Thanks!
dalechapman.bsky.social
I'm looking for the big document of A Level maths videos broken down by topic/skill with links to 5 or so excellent YouTubers-- can anyone point me to it? #alevelmaths #mathstoday
dalechapman.bsky.social
The two lines of text is really weird.
Nice to know there's an option out there that you can still type naughty words on in the blocky text, though.
dalechapman.bsky.social
Drawn to the Malaysian Casio #MathsOnHoliday
dalechapman.bsky.social
There's water trapped in this train window, and here's how it sits when the train
• moved at a constant speed
• accelerated out of the station
• decelerated coming into the station
Which is which? How do you know?
#MathsOnHoliday #MathsToday
dalechapman.bsky.social
Taking a break from maths to release sea turtle hatchling into the sea.
dalechapman.bsky.social
I did this with a class and nobody got anything that worked the whole lesson. Then one kid went home and wrote some code that brute forced every combination and found every working combination!
dalechapman.bsky.social
Grazing goat - this was our EAL session on PGCE, delivered to us in a foreign language
nrich.maths.org/problems/unu...
An Unusual Shape | NRICH
nrich.maths.org
dalechapman.bsky.social
Can it possibly be more impactful than like.... drinking milk