--- title: "Coding Classes in Rhondda Cynon Taf | Online, Ages 6 to 67" description: "Live online coding, Python and maths classes across Rhondda Cynon Taf: Aberdare, Pontypridd, Tonypandy, Mountain Ash, Treorchy, Tonyrefail and Llantrisant." canonical: https://learn.modernagecoders.com/coding-classes-in-rhondda-cynon-taf source: src/pages/coding-classes-in-rhondda-cynon-taf.html --- > Live online coding, Python and maths classes across Rhondda Cynon Taf: Aberdare, Pontypridd, Tonypandy, Mountain Ash, Treorchy, Tonyrefail and Llantrisant. Skip to contentCourses for Rhondda Cynon Taf ## Rhondda Cynon Taf starting points A Year 2 pupil in Treorchy who builds towers, a Year 7 in Mountain Ash ready for Python, a Year 10 in Aberdare with WJEC GCSE maths ahead, and an adult in Pontyclun changing career. Every one begins with a free lesson. [![Coding for Kids course thumbnail](/images/kids-coding.webp)Ages 6 to 12Coding for KidsBlock coding with bridges, towers and shapes that grow.See the syllabus](/courses/kids-coding-blocks-masterclass)[![Maths Through Coding course thumbnail](/images/maths-through-coding.webp)Ages 10 to 15Maths Through CodingArea, volume and ratio made visible with short programs.See the syllabus](/courses/maths-through-coding)[![High School Mathematics course thumbnail](/images/high-school-maths.webp)Ages 14 to 18High School MathematicsThorough secondary maths, from similar shapes to algebraic proof.See the syllabus](/courses/complete-high-school-mathematics-mastery)[![Python Masterclass course thumbnail](/images/python-college.webp)AdultsPython MasterclassPython from scratch for adults, up to working programs.See the syllabus](/courses/python-programming-masterclass-zero-to-advanced-college) Browse the [course atlas](/course-atlas) for more than one hundred options and use the [coding roadmap](/coding-roadmap) to check prerequisites. The four we are known for ### Python, AI, vibe coding and agentic coding These run underneath everything above. Every one is live and online, placed by ability rather than by age, and the first class is free. [![Vibe Coding for Teens course thumbnail](/images/vibe-coding-teens.webp)Vibe codingAges 13 to 17Vibe Coding for TeensPython, web and AI projects where the learner still owns the thinking.See the syllabus](/courses/vibe-coding-for-teens-python-web-ai-projects-course)[![Python Automation Course course thumbnail](/images/python-college.webp)Python and AICollege and adultPython Automation CourseAutomate the work you already do, then let AI carry part of it.See the syllabus](/courses/python-ai-automation-masterclass-college)[![AI and Machine Learning for Teens course thumbnail](/images/ai-ml-teens.webp)AI and MLAges 14 to 18AI and Machine Learning for TeensTrain a model, read what it learned, and be able to say why it is wrong.See the syllabus](/courses/ai-ml-masterclass-teens)[![Codex & Claude Code course thumbnail](/images/codex-claude-code-adults.webp)Agentic codingProfessionalsCodex & Claude CodeRun AI coding agents on real work without losing control of the codebase.See the syllabus](/courses/codex-and-claude-code-ai-coding-agents-masterclass-for-adults-professionals)Rhondda Cynon Taf in figures ## 237,651 people and many towns The total is the ONS usual-resident count from the 2021 census, accessed through Nomis. The table lists ONS built-up areas above 4,000 people from that census. | Town | People | Town | People | | --- | --- | --- | --- | | Aberdare | 37,675 | Treorchy | 7,650 | | Pontypridd | 31,900 | Beddau | 7,350 | | Tonypandy | 17,210 | Abercynon | 6,375 | | Church Village | 14,155 | Pontyclun | 5,800 | | Porth | 13,350 | Treherbert | 5,425 | | Rhondda | 13,265 | Ynysybwl | 4,580 | | Mountain Ash | 13,000 | Ferndale | 4,300 | | Tonyrefail | 11,440 | Llantrisant | 4,200 | | Llanharan and Brynna | 8,105 | | | Summing output areas ourselves, we match each published figure within seven people. ONS treats Rhondda as its own built-up area, separate from Tonypandy, Porth, Treorchy and Treherbert. Schools here follow the Curriculum for Wales, and exam classes sit WJEC GCSE and A level papers. We do not know each school's holiday weeks, so families send them to us. ### Cardiff and exam help For the capital, see our [Cardiff](/best-coding-class-in-cardiff) page. For exams, try [WJEC GCSE Computer Science](/wjec-gcse-computer-science-help-wales) and [GCSE Maths and Numeracy in Wales](/gcse-maths-and-numeracy-wales-help). The Rhondda Cynon Taf project ## Twice the size, eight times the weight One rule for areas, one for volumes, and what happens when they pull apart. First the holes. A circle's area is pi times the diameter squared, over four, and the learner codes it for the three sizes in the record. The diameters go 3, 2, 1, but the areas go 9, 4, 1, so the largest hole does almost two thirds of the work. Each metre of bridge width loses nearly 9 cubic metres of stone to one set of three holes, which at a typical 2,400 kilograms per cubic metre, our assumption, is about 21 tonnes. That weight was sitting where Edwards least wanted it. | Hole diameter | Area | Share of the set | Stone saved per metre of width | | --- | --- | --- | --- | | 2.7 m | 5.73 m² | 64% | 13.7 t | | 1.8 m | 2.55 m² | 29% | 6.1 t | | 0.9 m | 0.64 m² | 7% | 1.5 t | | All three | 8.91 m² | 100% | 21.4 t | Now the harder idea. Take a stone arch and build a copy exactly twice as big in every direction. Its weight depends on volume, so it grows eight times. The stone that carries that weight works through cross-sections, which grow only four times. Every square centimetre of the bigger arch therefore bears twice the load. The learner codes this square-cube law for arches scaled from an invented 10 metre model: at 20 metres the stress doubles, at 30 metres it triples, and at Pontypridd's 42.7 metres the arch is about 78 times heavier than the model while the stone bears over four times the stress. Galileo made the same argument about beams and bones in 1638. There is a classic slip to catch. Use the diameter where the radius belongs, and the program claims one set of holes removes 35.6 square metres per face, four times the truth. Learners add a test: a hole can never be larger than the square that just contains it. We should also be honest about the model. The record says Edwards pierced the stone to relieve pressure on the arch; the full story involves where the weight sits and how it pushes the arch out of shape, which our sums do not attempt. ### Ages 8 to 11 Double a cube made of sugar cubes, count how many it takes, then draw growing squares and cubes in Scratch. ### Ages 11 to 15 Code circle areas and the 3, 2, 1 pattern in Python, and print the stone saved per hole. ### Ages 15 and up Scale arches from 10 to 43 metres, chart weight against strength, and write the radius-check test. ### Bridge facts from Cadw, sums from us The dates, span and hole sizes are the record's. Stone density, bridge width and the 10 metre model are our assumptions, so the table illustrates scaling rather than surveying the real bridge. Why Pontypridd Bridge ## Four tries at one crossing What Cadw's record says about the bridge and its builder. | Record detail | What it says | | --- | --- | | Builder | William Edwards (1719 to 1789), minister and self-taught civil engineer | | Earlier tries | A three-arch bridge begun 1746 and swept away; a single span that collapsed in 1751 | | Completed | 1756, the last of four bridges on the site | | Span | A single arch of 42.7 m, the widest in Britain for 40 years, until Sunderland Bridge of 1796 | | Holes | Three circular holes of 2.7 m, 1.8 m and 0.9 m diameter | | Listing | Grade I, an 18th-century civil engineering achievement of national importance | Scaling laws decide what engineers can build. They explain why aircraft, wind turbine blades and even phone batteries cannot simply be made bigger, and why simulation software checks stress again whenever a design is resized. A Rhondda Cynon Taf learner who has watched weight outrun strength in a few lines of code understands why the fourth bridge needed a new idea, not just more stone. We have no link with Cadw. Cadw owns the bridge record; the scaling arithmetic, and any error in it, belongs to us. Year by year ## From sugar cubes to scaling laws Year bands give a rough idea; the free lesson sets the real start. Years 1 to 4 ### Build and count Block projects that stack, grow and count shapes. [Coding for Kids](/courses/kids-coding-blocks-masterclass)[Scratch Coding for Kids](/courses/scratch-programming-complete-course)Years 5 to 8 ### Areas in code Python that calculates circles, squares and ratios. [Maths Through Coding](/courses/maths-through-coding)[Python and AI for Kids](/courses/python-ai-kids-masterclass)Years 9 to 13 ### Similarity and proof Similar shapes, powers and modelling, with WJEC GCSE and A level in mind. [High School Mathematics](/courses/complete-high-school-mathematics-mastery)[Python for Teens](/courses/python-complete-masterclass-teens)Adults ### Python from zero Adult Python, from the first line to useful tools. [Python Masterclass](/courses/python-programming-masterclass-zero-to-advanced-college)[Data Analysis Course](/courses/data-analysis-mastery-course-college)AI and scale ## An AI can scale a design in a second. Will it warn you the weight grew eight times? Resizing is easy for software; knowing what resizing does is the human part. Ask a chatbot to double a structure and it may double every number, or apply one scale factor to everything. Areas, volumes and stresses each scale differently, and a single wrong power ruins the answer without any error message. A Rhondda Cynon Taf student who has coded the square-cube law knows to ask how each quantity grows before trusting a resized design, from a person or a program. Knowing that not everything scales the same way is a strong reason for a Rhondda Cynon Taf teenager to stay with coding in 2026. The longer argument is in [why teenagers should still learn to code in 2026](/blog/is-coding-worth-learning-2026). Running the lessons ## From Treherbert to Llantrisant, on screen Valley or town, a home connection is all that is needed. ### Typed by the learner Every line is written by the student, and the tutor follows along on screen, prompting with questions rather than answers. ### By Welsh year A Ferndale Year 5 or a Pontypridd Year 12 is placed by Welsh school year and progression step, with WJEC exam names. Teaching is in English. ### Free to try A full first lesson with no charge, finishing with a recommendation. ### Same-level groups Five to ten learners at one level, from across the UK. ### Term pattern Two lessons a week through term, off in the holidays. ### Fixed local hour British clock changes do not move your lesson; our teachers in India shift to match. Why groups mix towns Five learners at the same level and free at the same hour are rarely in one valley. Online classes put an Ynysybwl or Beddau learner with the right peers. Fees ## Rhondda Cynon Taf fees Aberdare pays what Llantrisant pays, and the same holds for every country we teach outside India. First class**USD 0** A full free lesson, followed by our advice. Group tuition**USD 100** About eight lessons a month with five to ten classmates. Private tuition**USD 150** About eight lessons a month with a tutor to yourself. Our prices are in US dollars only; we never quote sterling. Payment starts after the trial has fixed a course and a weekly time, and the pricing page explains breaks, missed lessons and switching formats. Request placement[Check availability](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20we%20are%20in%20Rhondda%20Cynon%20Taf%20and%20would%20like%20to%20book%20a%20free%20lesson%2C%20please.)Reviews ## What families rate us on Google Rated 4.9 across 547 Google reviews. These are real reviews, reproduced as written. ★★★★★ "The one step solution for my son. Modern Age Coders make learning coding so simple that kids love it. The teachers explain complex concepts clearly with practical exercises and interactive content." Ria Mukherjee Parent ★★★★★ "Modern Age Coders has been a game-changer for me. I struggled to grasp IT concepts and coding before joining, but their classes transformed everything. I can now confidently write complex programs with ease." Samriddha Mondal Student ★★★★★ "One of the most wonderful education centres out there. Education is not limited to school syllabus but focuses on skill development." Vansh Agarwal Student ★★★★★ "My child Dhairya is really enjoying the Modern Age Coders classes. This is his first online class and he eagerly looks forward to it. I can already see his improvement, and the teachers are very cooperative." Sonam Oswal Parent of Dhairya ★★★★★ "Modern Age Coders have wonderful teachers who teach in a clear, easy and practical way. The teacher boosts students' confidence and inspires them to learn without hesitation." Sonu Goyal Parent ★★★★★ "I highly recommend this computer coding class! The teachers are incredibly knowledgeable and passionate about coding." Ritu Kedia Parent Free placement class ## Book a free lesson in Rhondda Cynon Taf Send us the learner's age or school year and one interest. The trial might be a Scratch building game, a first Python program, or the Pontypridd Bridge scaling sums. ### Contact the team directly WhatsApp or call [+91 91233 66161](tel:+919123366161), or email [contact@modernagecoders.com](mailto:contact@modernagecoders.com). This is Modern Age Coders' actual contact, an Indian number, and not an invented Rhondda Cynon Taf one. [WhatsApp Modern Age Coders](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20we%20are%20in%20Rhondda%20Cynon%20Taf%20and%20would%20like%20to%20book%20a%20free%20lesson%2C%20please.) Submitted details are used for placement and follow-up. FAQ ## Rhondda Cynon Taf questions The county borough, the bridge project and practical details. ### How many people live in Rhondda Cynon Taf? The 2021 census counted 237,651 usual residents in Rhondda Cynon Taf. ### What are the largest towns in Rhondda Cynon Taf? ONS 2021 built-up areas: Aberdare 37,675, Pontypridd 31,900 and Tonypandy 17,210. ### What is the Pontypridd Bridge project? Learners code circle areas for the bridge's three holes and the square-cube law in Python to see why a wider arch carries more stress. ### What is the square-cube law? Scale a shape up by some factor and its areas grow by the square of that factor while its volume and weight grow by the cube. ### Who built Pontypridd Bridge? William Edwards, completing it in 1756 at his fourth attempt, according to Cadw. ### Are classes held in Rhondda Cynon Taf? All teaching is online, so learners join from home anywhere in the county borough. ### Can you help with WJEC GCSE maths? Yes, along with Computer Science. We teach for understanding and make no grade promises. ### What ages are welcome? Learners from 6 up to 67, on courses that match their level. ### What is the monthly fee? The first lesson is free; then USD 100 a month for a group or USD 150 a month for private lessons. ### Do you teach in the school holidays? Normally not. Share your holiday weeks and we leave them out. Related pages ## More South Wales pages [Cardiff](/best-coding-class-in-cardiff) has a city page, [Carmarthenshire](/coding-classes-in-carmarthenshire) measures the elliptical arch built by Edwards's son Thomas, and [Merthyr Tydfil](/coding-classes-in-merthyr-tydfil-county-borough) tracks an iron span growing in the heat. For all of Wales, go to the [Wales](/coding-and-ai-classes-in-wales) page, and for the rest of the country the [UK hub](/coding-classes-in-united-kingdom). Book the free class[Message our team on WhatsApp](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20we%20are%20in%20Rhondda%20Cynon%20Taf%20and%20would%20like%20to%20book%20a%20free%20lesson%2C%20please.)Free Rhondda Cynon Taf class[Call +91 91233 66161](tel:+919123366161) ## Keep exploring Modern Age Coders ### Coding classes in nearby places - [Coding Classes in Rijswijk](/coding-classes-in-rijswijk) - [Coding Classes in Renfrewshire](/coding-classes-in-renfrewshire) - [Coding Classes in Roermond](/coding-classes-in-roermond) - [Coding Classes in Rajasthan](/coding-classes-in-rajasthan) - [Coding Classes in Roosendaal](/coding-classes-in-roosendaal) - [Coding Classes in Purmerend](/coding-classes-in-purmerend) - [Coding Classes in County Carlow](/coding-classes-in-county-carlow) - [Coding Classes in Cornwall](/coding-classes-in-cornwall) - [Coding Classes in Conwy](/coding-classes-in-conwy) ### Free resources - [AI & Machine Learning Tutorial: Basics to Deep Learning](/resources/ai-and-machine-learning) - [Deep Learning with TensorFlow and Keras](/resources/ai-and-machine-learning/deep-learning-with-tensorflow-keras) - [Generics in Java](/resources/java/generics-in-java) - [Large Language Models](/resources/ai-and-machine-learning/large-language-models) ### From the blog - [File Organization in Python: A Beginner's Guide to Managing Your](/blog/file-organization-in-python) - [Advantages of Functions in Python: 8 Benefits With Examples](/blog/advantages-functions-python-why-every-coder-should-use-them) - [Best Byju's Alternative for Kids and Teens in India (2026)](/blog/best-byjus-alternative) ### Start here - [How Modern Age Coders teaches, small batches and real projects](/how-we-teach) - [What Modern Age Coders families say](/love) --- *Canonical: https://learn.modernagecoders.com/coding-classes-in-rhondda-cynon-taf*