aHally — teaching

Hello👋
I’m Angus.
I make hard ideas feel obvious.

I came up through the classroom before I built products — a GCSE and A-Level maths teacher at Burnt Mill Academy in Harlow, on a TeachFirst placement from 2016 to 2018. The hardest thing I’ve done, and where I learned to operate. The teaching muscle never left.

Two years in the classroomGCSE + A-Level mathsTeachFirst · 2016–2018
— What teaching taught me

The skills that outlasted the classroom.

Why this CV is also relevant to anyone hiring an operator who has held a room. Two years, one placement, the hardest job I’ve had — here’s what transferred.

briefing skill

The gap between your model and theirs

Knowing where your understanding of a topic differs from the student's — and reasoning across that gap — is the same skill that lets me brief engineers as a non-engineer and investors as a non-investor.

performance discipline

Composure under low-status conditions

Holding a Year 10 bottom set on a Friday afternoon is a particular kind of performance discipline. Everything since has had a lower difficulty floor.

operating system

Routine as a force multiplier

Lesson structure — do-now, modelling, independent practice, plenary — is what makes a classroom function. The same shape underwrites a startup operating system, a code-review process, a meeting agenda.

operator stamina

Marking 31 books at midnight

Operator stamina starts here. So does the willingness to do the unglamorous part of the job rather than perform around it.

— Pedagogy

Five principles I’d still teach by.

Two years in front of GCSE and A-Level classes taught me the difference between a lesson that lands and one that’s forgotten by Monday. These are the principles I’d bring to any room now — a classroom, a code review, an investor update.

01

Diagnostic first.

Find the misconception, then teach the correction. Don't re-teach what's already known.

02

Show, then name.

Worked examples beat explanation; modelling out loud beats both. The diagram earns the words.

03

Retrieve, don't re-expose.

Spaced retrieval over re-reading. The effort of recall is where the learning actually happens.

04

Test in the wild.

A student who can apply a concept in a non-routine context has really got it. Routine practice flatters everyone.

05

Safe to be wrong.

The biggest determinant of A-Level outcomes is whether a student will be wrong in front of you. Build that before technique.

— Who this is for

Four rooms this speaks to.

— School leadership

Heads & SLT weighing a TeachFirst-trained operator

Two years of GCSE foundation and higher tier plus A-Level maths in a mixed-intake comprehensive, PGCE completed alongside the placement.

— TeachFirst network

Fellow ambassadors and the programme

Burnt Mill Academy, Harlow, 2016–2018, is the throughline — the placement that the rest of the operating career is built on.

— Edtech ventures

Founders building for the classroom

Someone who has actually marked the books and held the room, not just modelled the market — useful when the product has to survive contact with a real lesson.

— 1:1 tutoring

Students & parents after maths support

GCSE or A-Level maths help from someone who taught both tiers, diagnostic-first and patient with the gap between confidence and competence.

*

Straight talk: this page leads with the narrative, not the numbers. Class-level exam-result deltas, observation feedback, and progress data are still in my TeachFirst archive — once I surface them, they lead. I’d rather flag the gap than paper over it.

— Get in touch

Want to talk teaching?

A school role, an edtech problem, GCSE or A-Level tutoring, or just comparing notes on pedagogy — the teaching never really stopped, and I’d love to hear from you.

I only use your name, email and message to reply — nothing else. See how your details are handled in the privacy notice.

Spam protection loads when you start typing.
aHally — teaching

Hello👋
I’m Angus.
I make hard ideas feel obvious.

I came up through the classroom before I built products — a GCSE and A-Level maths teacher at Burnt Mill Academy in Harlow, on a TeachFirst placement from 2016 to 2018. The hardest thing I’ve done, and where I learned to operate. The teaching muscle never left.

Two years in the classroomGCSE + A-Level mathsTeachFirst · 2016–2018
— What teaching taught me

The skills that outlasted the classroom.

Why this CV is also relevant to anyone hiring an operator who has held a room. Two years, one placement, the hardest job I’ve had — here’s what transferred.

briefing skill

The gap between your model and theirs

Knowing where your understanding of a topic differs from the student's — and reasoning across that gap — is the same skill that lets me brief engineers as a non-engineer and investors as a non-investor.

performance discipline

Composure under low-status conditions

Holding a Year 10 bottom set on a Friday afternoon is a particular kind of performance discipline. Everything since has had a lower difficulty floor.

operating system

Routine as a force multiplier

Lesson structure — do-now, modelling, independent practice, plenary — is what makes a classroom function. The same shape underwrites a startup operating system, a code-review process, a meeting agenda.

operator stamina

Marking 31 books at midnight

Operator stamina starts here. So does the willingness to do the unglamorous part of the job rather than perform around it.

— Pedagogy

Five principles I’d still teach by.

Two years in front of GCSE and A-Level classes taught me the difference between a lesson that lands and one that’s forgotten by Monday. These are the principles I’d bring to any room now — a classroom, a code review, an investor update.

01

Diagnostic first.

Find the misconception, then teach the correction. Don't re-teach what's already known.

02

Show, then name.

Worked examples beat explanation; modelling out loud beats both. The diagram earns the words.

03

Retrieve, don't re-expose.

Spaced retrieval over re-reading. The effort of recall is where the learning actually happens.

04

Test in the wild.

A student who can apply a concept in a non-routine context has really got it. Routine practice flatters everyone.

05

Safe to be wrong.

The biggest determinant of A-Level outcomes is whether a student will be wrong in front of you. Build that before technique.

— Who this is for

Four rooms this speaks to.

— School leadership

Heads & SLT weighing a TeachFirst-trained operator

Two years of GCSE foundation and higher tier plus A-Level maths in a mixed-intake comprehensive, PGCE completed alongside the placement.

— TeachFirst network

Fellow ambassadors and the programme

Burnt Mill Academy, Harlow, 2016–2018, is the throughline — the placement that the rest of the operating career is built on.

— Edtech ventures

Founders building for the classroom

Someone who has actually marked the books and held the room, not just modelled the market — useful when the product has to survive contact with a real lesson.

— 1:1 tutoring

Students & parents after maths support

GCSE or A-Level maths help from someone who taught both tiers, diagnostic-first and patient with the gap between confidence and competence.

*

Straight talk: this page leads with the narrative, not the numbers. Class-level exam-result deltas, observation feedback, and progress data are still in my TeachFirst archive — once I surface them, they lead. I’d rather flag the gap than paper over it.

— Get in touch

Want to talk teaching?

A school role, an edtech problem, GCSE or A-Level tutoring, or just comparing notes on pedagogy — the teaching never really stopped, and I’d love to hear from you.

I only use your name, email and message to reply — nothing else. See how your details are handled in the privacy notice.

Spam protection loads when you start typing.