Catriona Agg
@catrionaagg.bsky.social
Maths teacher. I aim to share lots of snippets of my lessons using #MathsToday and would encourage you to do the same!
Also occasional geometry puzzles 🧩
Also occasional geometry puzzles 🧩
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❤️ Love this ❤️
@mathforge.org has done what I’ve never been organised enough to do myself, and catalogued every #geometrypuzzle I’ve ever posted on social media. It looks amazing!
@mathforge.org has done what I’ve never been organised enough to do myself, and catalogued every #geometrypuzzle I’ve ever posted on social media. It looks amazing!
Reposted by Catriona Agg
In #MathsToday my yr 13s showed me an integral a day website they'd found and were having a go at. They are the best kind of students. Had to tell two off because they were doing that integration and they hadn't tried the trig ones yet!
November 25, 2025 at 5:55 PM
In #MathsToday my yr 13s showed me an integral a day website they'd found and were having a go at. They are the best kind of students. Had to tell two off because they were doing that integration and they hadn't tried the trig ones yet!
We’ve reached the time of year when the looky-likeys are starting to get serious for Y13FM #MathsToday #ALevelMaths
November 25, 2025 at 5:01 PM
We’ve reached the time of year when the looky-likeys are starting to get serious for Y13FM #MathsToday #ALevelMaths
I enjoyed doing this question with Y7 #MathsToday. I need to remember to revisit this with Y8 when they start standard form - it’s exactly the way I want them to be thinking about it.
November 25, 2025 at 4:56 PM
I enjoyed doing this question with Y7 #MathsToday. I need to remember to revisit this with Y8 when they start standard form - it’s exactly the way I want them to be thinking about it.
Reposted by Catriona Agg
In #mathstoday I enjoyed solving this problem posed by a colleague.
November 24, 2025 at 10:03 PM
In #mathstoday I enjoyed solving this problem posed by a colleague.
Reposted by Catriona Agg
With Year 12 today we were looking at remainder theorem and we did the very lovely true or false task from Integral maths. See also here my mini-whiteboard check before letting them get on which was nice as it forced them to think about the positions of the numbers.
#Alevelmaths #mathstoday
#Alevelmaths #mathstoday
November 24, 2025 at 9:54 AM
With Year 12 today we were looking at remainder theorem and we did the very lovely true or false task from Integral maths. See also here my mini-whiteboard check before letting them get on which was nice as it forced them to think about the positions of the numbers.
#Alevelmaths #mathstoday
#Alevelmaths #mathstoday
Reposted by Catriona Agg
Advice sought:
I am about to teach Year 11 Foundation area, perimeter, volume, surface area of 2D/3D shapes. In theory, they have done all this before but every time they are asked to calculate the area of a triangle it is like seeing it again for the first time.
#MathsToday #MathsTeaching
I am about to teach Year 11 Foundation area, perimeter, volume, surface area of 2D/3D shapes. In theory, they have done all this before but every time they are asked to calculate the area of a triangle it is like seeing it again for the first time.
#MathsToday #MathsTeaching
November 24, 2025 at 12:45 PM
Advice sought:
I am about to teach Year 11 Foundation area, perimeter, volume, surface area of 2D/3D shapes. In theory, they have done all this before but every time they are asked to calculate the area of a triangle it is like seeing it again for the first time.
#MathsToday #MathsTeaching
I am about to teach Year 11 Foundation area, perimeter, volume, surface area of 2D/3D shapes. In theory, they have done all this before but every time they are asked to calculate the area of a triangle it is like seeing it again for the first time.
#MathsToday #MathsTeaching
Reposted by Catriona Agg
How will elem PSTs distinguish these pentagons? How would kids? #mathstoday
November 24, 2025 at 5:32 PM
How will elem PSTs distinguish these pentagons? How would kids? #mathstoday
Reposted by Catriona Agg
Love this congruence puzzle from @fawnnguyen.substack.com drive.google.com/file/d/13j_J... have used many times. Cody (if you're sending to Fawn use my name, dude) saw something new... #mathstoday
November 24, 2025 at 5:40 PM
Love this congruence puzzle from @fawnnguyen.substack.com drive.google.com/file/d/13j_J... have used many times. Cody (if you're sending to Fawn use my name, dude) saw something new... #mathstoday
Reposted by Catriona Agg
After #MathsToday I created a new fill in the blanks generator on Normal Distribution.
www.interactive-maths.com/normal-distr...
You can choose what is revealed / hidden for any randomly generated distribution by clicking. Easy to screenshot into a presentation, or use live.
www.interactive-maths.com/normal-distr...
You can choose what is revealed / hidden for any randomly generated distribution by clicking. Easy to screenshot into a presentation, or use live.
November 24, 2025 at 8:50 PM
After #MathsToday I created a new fill in the blanks generator on Normal Distribution.
www.interactive-maths.com/normal-distr...
You can choose what is revealed / hidden for any randomly generated distribution by clicking. Easy to screenshot into a presentation, or use live.
www.interactive-maths.com/normal-distr...
You can choose what is revealed / hidden for any randomly generated distribution by clicking. Easy to screenshot into a presentation, or use live.
Reposted by Catriona Agg
New A-level Maths and Further Maths resources:
✨Transformations of Trig Graphs Match-Up
✨Elastic Strings and Work Done Fill in the Blanks
Find them at www.draustinmaths.com/a-level
#UKMathsChat #ALevelMaths #MathsToday
✨Transformations of Trig Graphs Match-Up
✨Elastic Strings and Work Done Fill in the Blanks
Find them at www.draustinmaths.com/a-level
#UKMathsChat #ALevelMaths #MathsToday
November 23, 2025 at 6:31 PM
New A-level Maths and Further Maths resources:
✨Transformations of Trig Graphs Match-Up
✨Elastic Strings and Work Done Fill in the Blanks
Find them at www.draustinmaths.com/a-level
#UKMathsChat #ALevelMaths #MathsToday
✨Transformations of Trig Graphs Match-Up
✨Elastic Strings and Work Done Fill in the Blanks
Find them at www.draustinmaths.com/a-level
#UKMathsChat #ALevelMaths #MathsToday
Reposted by Catriona Agg
Reposted by Catriona Agg
#weeklywins I raided physics and used actual equipment to teach moments to my year 13s and it worked well! #alevelmaths
November 23, 2025 at 8:00 AM
#weeklywins I raided physics and used actual equipment to teach moments to my year 13s and it worked well! #alevelmaths
Reposted by Catriona Agg
Friday was that manic I forgot to actually post my #WeeklyWins 😂
● Y9s doing really well with scatters
● Getting Y7s to realise that fractions are so much better than formula triangles for compound measures (take that science dept!)
● got my retakes through their first L2 6 marker
Keep posting!
● Y9s doing really well with scatters
● Getting Y7s to realise that fractions are so much better than formula triangles for compound measures (take that science dept!)
● got my retakes through their first L2 6 marker
Keep posting!
November 23, 2025 at 8:24 AM
Friday was that manic I forgot to actually post my #WeeklyWins 😂
● Y9s doing really well with scatters
● Getting Y7s to realise that fractions are so much better than formula triangles for compound measures (take that science dept!)
● got my retakes through their first L2 6 marker
Keep posting!
● Y9s doing really well with scatters
● Getting Y7s to realise that fractions are so much better than formula triangles for compound measures (take that science dept!)
● got my retakes through their first L2 6 marker
Keep posting!
Reposted by Catriona Agg
This year I have printed some mathematical advent calendars. Turns out this was more expensive to do than I anticipated. I have a limited number available if any of you would like to buy one? £8 including postage and a couple of extra little surprises.More details: buymeacoffee.com/drbennison/e...
Printed Advent Calendar 2025
The 2025 Dr Bennison Maths printed advent calendar. Professionally printed in full colour in Cornwall.Each door opens to reveal a QR code which will take you to a document on my website which will con
buymeacoffee.com
November 22, 2025 at 5:17 PM
This year I have printed some mathematical advent calendars. Turns out this was more expensive to do than I anticipated. I have a limited number available if any of you would like to buy one? £8 including postage and a couple of extra little surprises.More details: buymeacoffee.com/drbennison/e...
Reposted by Catriona Agg
Been using AI to make A-Level questions as starters for Y12 lessons, which it seems very good at. Worked solutions are great too
Created as a web file that can be opened in any browser. Click to reveal solutions.
drive.google.com/file/d/1L0wu...
#MathsToday #ALevelMaths
Created as a web file that can be opened in any browser. Click to reveal solutions.
drive.google.com/file/d/1L0wu...
#MathsToday #ALevelMaths
November 22, 2025 at 12:19 PM
Been using AI to make A-Level questions as starters for Y12 lessons, which it seems very good at. Worked solutions are great too
Created as a web file that can be opened in any browser. Click to reveal solutions.
drive.google.com/file/d/1L0wu...
#MathsToday #ALevelMaths
Created as a web file that can be opened in any browser. Click to reveal solutions.
drive.google.com/file/d/1L0wu...
#MathsToday #ALevelMaths
I used some of the statements from undergroundmathematics.org/quadratics/d... as a starter for Y12 before moving onto the discriminant. It was a nice excuse to get them using sliders and reasoning about graphs in order to reason about equations. #ALevelMaths #MathsToday
November 21, 2025 at 5:57 PM
I used some of the statements from undergroundmathematics.org/quadratics/d... as a starter for Y12 before moving onto the discriminant. It was a nice excuse to get them using sliders and reasoning about graphs in order to reason about equations. #ALevelMaths #MathsToday
Reposted by Catriona Agg
#Mathstoday
More expressions with my year 8s today with some extra questions from corbettmaths.
More expressions with my year 8s today with some extra questions from corbettmaths.
November 21, 2025 at 1:53 PM
#Mathstoday
More expressions with my year 8s today with some extra questions from corbettmaths.
More expressions with my year 8s today with some extra questions from corbettmaths.
Today was the best Friday period 5 lesson I’ve had with my Y8s all year. They worked really hard and it felt like a nice calm end to the day. #WeeklyWins
November 21, 2025 at 5:31 PM
Today was the best Friday period 5 lesson I’ve had with my Y8s all year. They worked really hard and it felt like a nice calm end to the day. #WeeklyWins
Reposted by Catriona Agg
#Mathstoday
Got to start expressions with my other year 8 group today.
Got to start expressions with my other year 8 group today.
November 20, 2025 at 3:25 PM
#Mathstoday
Got to start expressions with my other year 8 group today.
Got to start expressions with my other year 8 group today.
Reposted by Catriona Agg
I used this yesterday with Y7. The number line helped them get their heads around the idea that there is one more "jump" than blanks to fill.
#MathsToday
#MathsToday
November 20, 2025 at 10:12 AM
I used this yesterday with Y7. The number line helped them get their heads around the idea that there is one more "jump" than blanks to fill.
#MathsToday
#MathsToday
Reposted by Catriona Agg
In #mathstoday I did an assessment with Year 13. It was old-specification C3 June 2013. I liked this question and, in particular, part (d) which really gets them to think about what inverses mean. I have not seen many questions that could not be solved by brute force.
November 20, 2025 at 9:43 AM
In #mathstoday I did an assessment with Year 13. It was old-specification C3 June 2013. I liked this question and, in particular, part (d) which really gets them to think about what inverses mean. I have not seen many questions that could not be solved by brute force.
I was giving back mock papers in #MathsToday. I regretted reusing this slide from last year when a decent number of them started sniggering at my choice of grades. Apparently even Y11 still find this funny!
November 19, 2025 at 4:36 PM
I was giving back mock papers in #MathsToday. I regretted reusing this slide from last year when a decent number of them started sniggering at my choice of grades. Apparently even Y11 still find this funny!
Reposted by Catriona Agg
Mock Time for year 11s so also a fun time to make resources based on topics they struggled with!
Wrote a post about it here: chelekmaths.com/2025/11/19/e...
Some nice questions were made on the way #MathsToday
Wrote a post about it here: chelekmaths.com/2025/11/19/e...
Some nice questions were made on the way #MathsToday
November 19, 2025 at 4:24 PM
Mock Time for year 11s so also a fun time to make resources based on topics they struggled with!
Wrote a post about it here: chelekmaths.com/2025/11/19/e...
Some nice questions were made on the way #MathsToday
Wrote a post about it here: chelekmaths.com/2025/11/19/e...
Some nice questions were made on the way #MathsToday
Reposted by Catriona Agg
Worked hard on a big revision of my risps. Weeding out mistakes, making tasks clearer, writing Geogebra and Excel files, all with better navigation; look out for the free eBook coming out in January!
November 17, 2025 at 6:47 PM
Worked hard on a big revision of my risps. Weeding out mistakes, making tasks clearer, writing Geogebra and Excel files, all with better navigation; look out for the free eBook coming out in January!