I am very passionate about Primary Mathematics. MaST and MA in Mathematics Education. Currently working for @hertsmaths as a Maths Teaching and Learning Adviser
Joined August 2012
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90 Photos and videos
Doug Harmer retweeted
⭐Leading Primary Maths ⭐
The recording of webinar 3 is now available: 'Getting to grips with the new Ofsted Toolkit as a maths subject leader.'
It’s not to late to join us – 3 recordings are available and 3 live sessions still to come!
hub.hfleducation.org/shop/le…
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Doug Harmer retweeted
1 Dec 2025
NEW BLOG: 🎄How do you keep #primarymaths meaningful and manageable this December?🎄
Following the @hertsearlyyears blog on keeping Christmas meaningful, here are some ideas for balancing festivities within an already packed timetable this December.
hfleducation.org/blog/maths-…
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It’s from the brilliant Ben @hertsassessment. He’s clear it’s only a guide, not a guarantee - but is based on a lot of experience!
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Doug Harmer retweeted
6 Nov 2025
The lovely @MrsALPeck has featured on a @SecEd_Education and @HeadteacherNews podcast episode.
Alongside @ClareHDuffy and @pkainsworth Anne chatted to Pete Henshaw about the Ofsted changes and how schools can prepare. Listen to the episode here: hfl.mobi/AnneOfstedPodcastSO…
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Doug Harmer retweeted
14 Oct 2025
🤩MATHS LEADER UPDATE OCTOBER EDITION 🤩
Check your inboxes or click the link to find:
Practical strategies to support reasoning & problem solving
Inclusive strategies to support all learners
Taster of Year 5 challenge @HFL_Education
mailchi.mp/hfleducation/prim…
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Doug Harmer retweeted
24 Sep 2025
NEW BLOG: Exploring "how bar modelling can support pupils in solving measure-based questions, drawing on examples from the 2025 maths SATs Paper 2. As always, the emphasis is on exposing the maths, not just solving the problem."
hfleducation.org/blog/measur…
hfleducation.org/blog/measur…
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Doug Harmer retweeted
10 Sep 2025
The latest edition of our free Primary Maths Subject Leader Update newsletter is out NOW! Don't forget to sign up so it's directly sent to your inbox! hfl.mobi/PrimaryMathsX-Sept2…
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‘Modelling for Maths Benchmarks’
A free download booklet with great tips and ideas for using manipulatives in maths to support teaching and learning in the classroom - from @OUPPrimary and @HFL_Education
fdslive.oup.com/www.oup.com/…
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9 Jun 2025
This includes scaffolding, with representations to support learning with regard to dividends, divisors and quotients. I have found this to be particularly beneficial for children in understanding the concept of 'remainders' #hflprimarymaths
9 Jun 2025
A new week and a new @HFL_Education blog!
➗Divide and conquer!➗
Here Doug looks at the journey towards formal written division and identified some of the common misconceptions to look out for, expose and address.
hfleducation.org/blog/divide… @Hertsmaths
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6 Jun 2025
How exciting! I have a new blog and I am particularly pleased with the title! hfleducation.org/blog/divide…
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Doug Harmer retweeted
30 Apr 2025
🎉Exciting news! We've joined up with @HFL_Education to create the Modelling for Maths Benchmarks to support teachers and schools, offering actionable ideas about how best to incorporate manipulatives into maths teaching. #ModellingForMaths
Find out more: ow.ly/bWz550VKloK
ALT Modelling for Maths Benchmarks from Oxford University Press (OUP) with HFL Education. Develop meaningful use of manipulatives in the maths classroom. The report cover shows primary school pupils using manipulatives, including Numicon, in the classroom.
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Doug Harmer retweeted
21 Apr 2025
⌛With 3 weeks until SATs, why not take a look at these ✅QUICK WINS ✅&🌟MATHS REVISION TIPS🌟to boost confidence for the KS2 tests 🚀
hfleducation.org/blog/year-6…
Free-to-download question overview from past arithmetic papers inside.
#Year6 #assessment
@NicolaAMaths @HFL_Education
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Doug Harmer retweeted
24 Feb 2025
Excellent work @Hertsmaths
I know improving maths skills and confidence for all pupils has always been what drives you.
#Secondary schools and #middleschool #maths teachers, if you have #Year7 children who struggle with maths this could be the answer!
24 Feb 2025
Would you like to play a part in researching ways to improve maths outcomes for low prior attaining children?
We’re delighted to be partnering with the @EducEndowFoundn and @policyatkings @KingsCollegeLon for this part-funded evaluation.
Gain access to a complete set of resources to support low prior attaining Year 7 students and help us explore whether our Making Fluent and Flexible Calculators Programme (MFFC) improves maths attainment amongst these students.
Find out more and register your interest here: hfl.mobi/EEFtrialsocials
Got some questions? Drop us an email at fluentandflexible.eef@hfleducation.org📩
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Doug Harmer retweeted
30 Dec 2024
2025, a mathematical wonder
x.com/i/status/1873734197392…
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Doug Harmer retweeted
20 Dec 2024
Oh crikey what a term! Thanks for all of our friends all over the education world. Have a fantastic Christmas xxx
20 Dec 2024
Season’s greetings from all of us at HFL!🎄
We hope you have a magical festive season and manage to find some moments to rest and re-charge over the school holidays.
Thank you for everything you have done to support children and young people this year – we see you and we appreciate you♥️Enjoy the break!
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Doug Harmer retweeted
21 Dec 2024
Save this one for a simple and hugely effective warm up (and string of fluency sessions) in the new year 🤗
21 Dec 2024
Looking to make maths engaging and accessible for all?
The simple bead string is a fantastic resource that can help with just that!
Dive into this blog by Lead Maths Teaching and Learning Adviser, Charlie Harber, to get some ideas on how you can use the 0-100 bead string in your classroom: hfl.mobi/MathsBeadStringBlog…
@Hertsmaths @HarberCharlie
#maths #primarymaths #beadstring
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Doug Harmer retweeted
20 Dec 2024
On behalf of the whole @HFL_Education maths team, we wish everyone a peaceful Christmas break. Thank you for all your support and engagement this year. See you in 2025!
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Doug Harmer retweeted
18 Dec 2024
Christmas has come early for the @Hertsmaths team as we got our hands @TeachPrimary award for #ESSENTIALmaths ! Cue the funky music and sparkles! 7 years on and so much more in the pipeline! Hugely grateful to the 100s of schools who trust us to support their curriculum. 🌟
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Doug Harmer retweeted
11 Dec 2024
🔗 Looking to connect with other maths subject leaders?
Join our free, collaborative space: Primary Maths Subject Leader Online Community
hub.hfleducation.org/shop/pr…
Free access to our blogs, maths newsletters & links to useful resources and webpages.
🥰 The more the merrier!!
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Doug Harmer retweeted
3 Dec 2024
There are problem-solving and reasoning freebies in this one along with recommendations of how to scaffold so that everyone can access and enjoy the task ⛄️
3 Dec 2024
New blog from the @HFL_Education maths team hfleducation.org/blog/develo…
42 free-to-download Festive Maths Challenges inside.
Enjoy! ☃️
#Oracy #Reasoning #ProblemSolving #Teamwork #MathsIsFun #Curious #Scaffolding #Confidence #Collaborating #Connections #PrimaryMaths #KS1 #KS2
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