Credits
Learn It With Me is built on other people's generous work: videos, data, fonts and software they share for anyone to use. Here's who made each, where it came from, and its licence. Thank you to all of them.
Everything not listed here (the interactives, their recordings, diagrams, questions and writing) was made for Learn It With Me. If we've missed or got wrong a credit for your work, please tell us and we'll put it right.
Subject videos
The short clips on each subject's card on the home page, and behind the subject's banner. Pexels and Pixabay videos are free to use, and neither asks for a credit, but we're glad to give one. Each is trimmed to 8 seconds, without sound.
Resource videos
Most resources' cards show a recording of the resource itself. These use stock footage instead (File Sizes, a stock photo).
Element videos (Periodic Table)
Each is trimmed to 8 seconds, from Wikimedia Commons. Each element's card on the Periodic Table credits its video too. Creative Commons licences ask for the title, the creator, the source and the licence: each is given here. We've trimmed each video, and our trimmed versions are shared under the same licence as the original.
Statistics (Country Profiles, Digital Divide Explorer)
The figures in Country Profiles come live from each country's statistics agency, so they're always the latest published. We show them as charts and tables, which counts as adapting them.
- World Bank Open Data, The World Bank — figures for every country, through the World Bank API (World Development Indicators), here, in the Countries database in SQL Challenges, and (downloaded, not live) the internet, mobile and broadband figures in Digital Divide Explorer. Licence: CC BY 4.0. Source: The World Bank, World Development Indicators.
- Measuring digital development: Facts and Figures 2024, International Telecommunication Union (ITU) — the 2024 figures for internet use in urban and rural areas, by age, by gender and by country income in Digital Divide Explorer; the World Bank's internet, mobile and broadband series there also come from ITU data. Source: ITU, Measuring digital development: Facts and Figures 2024.
- Human Development Reports, United Nations Development Programme (UNDP) — Human Development Index values and rankings. Licence: CC BY 3.0 IGO. Source: UNDP, Human Development Report data.
- Stats NZ — New Zealand figures, through the Aotearoa Data Explorer. Licence: CC BY 4.0. This work is based on/includes Stats NZ's data which are licensed by Stats NZ for reuse under the Creative Commons Attribution 4.0 International licence.
- Australian Bureau of Statistics — Australian figures, through the ABS Data API. Licence: CC BY 4.0. Source: Australian Bureau of Statistics, ABS Data API.
- Office for National Statistics — United Kingdom figures. Licence: Open Government Licence v3.0. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
- Statistics Canada — Canadian figures, through the Web Data Service. Licence: Statistics Canada Open Licence. Adapted from Statistics Canada, Web Data Service tables. This does not constitute an endorsement by Statistics Canada of this product.
- Eurostat — European figures, through the Eurostat dissemination API (shown as charts and tables). Licence: CC BY 4.0. Source: Eurostat.
- Statistics Dashboard, Statistics Bureau of Japan — Japanese figures. Licence: Public Data License v1.0. 出典：統計ダッシュボード（https://dashboard.e-stat.go.jp/）のデータを加工して作成 (made by editing data from the Statistics Dashboard). このサービスは、統計ダッシュボードのAPI機能を使用していますが、サービスの内容は国によって保証されたものではありません。 (This service uses the Statistics Dashboard API, but its content is not guaranteed by the Government of Japan.)
- IBGE, SIDRA, Instituto Brasileiro de Geografia e Estatística — Brazilian figures. Fonte: IBGE, SIDRA.
- Census and Statistics Department, Hong Kong SAR Government — Hong Kong figures. Licence: DATA.GOV.HK terms. Source: Census and Statistics Department, Hong Kong SAR Government (censtatd.gov.hk), via DATA.GOV.HK. The Government owns the intellectual property rights in the statistics.
- Data USA — United States figures (from the US Census Bureau and other agencies). Licence: GNU AGPL v3.0. Source: Data USA (datausa.io).
- The Big Mac index, The Economist — Big Mac prices and exchange rates. Licence: CC BY 4.0. Big Mac index data by The Economist.
- Flagpedia — country flags (served from flagcdn.com, drawn from Wikimedia Commons).
- factbook.json, the factbook.json project, from the CIA World Factbook — country facts (the Factbook stopped being updated in February 2026, so these are its last figures). Licence: CC0.
- AMECO, European Commission, DG ECFIN — the NAWRU (the Commission's NAIRU estimate) for EU countries in Country Information (copied by hand, not live). Licence: CC BY 4.0. Source: European Commission, AMECO database.
- Pre-election Economic and Fiscal Update 2026, The Treasury | Te Tai Ōhanga — New Zealand's NAIRU in Country Information (copied by hand, not live). Licence: CC BY 4.0. Crown copyright ©. Source: The Treasury, Pre-election Economic and Fiscal Update 2026.
- Budget 2026–27, Budget Paper No. 1, Australian Government, the Treasury — Australia's NAIRU in Country Information (copied by hand, not live). Licence: CC BY 4.0. Source: Commonwealth of Australia, Budget 2026–27, Budget Paper No. 1.
- Noncyclical Rate of Unemployment (NROU), U.S. Congressional Budget Office, through FRED (Federal Reserve Bank of St. Louis) — the United States' NAIRU in Country Information (copied by hand, not live). Licence: public domain (U.S. Government work).
- Monetary Policy Report, February 2026, Bank of England — the United Kingdom's NAIRU in Country Information (copied by hand, not live). Source: Bank of England.
Other data
- IP to Country Lite, DB-IP — which country a visitor is likely in, worked out from their internet address on our own server (nothing is sent to DB-IP), to show prices in their currency and the home page's greeting. Licence: CC BY 4.0. IP Geolocation by DB-IP (db-ip.com).
- Directory of Educational Institutions, Ministry of Education | Te Tāhuhu o te Mātauranga — the list of New Zealand schools to choose from when setting up a school. Licence: CC BY 4.0. Source: Ministry of Education, Directory of Educational Institutions, licensed under CC BY 4.0.
- PubChem periodic table, National Library of Medicine (NCBI) — the Periodic Table's element data (we convert the units and correct two rounded atomic masses), and the Elements database in SQL Challenges. Kim S, Chen J, Cheng T, et al. PubChem 2025 update. Nucleic Acids Res. 2025;53(D1):D1516–D1525. doi:10.1093/nar/gkae1059
- Wikidata, Wikidata's contributors — the Songs and Films databases in SQL Challenges (songs and films, their performers and directors, years, lengths, genres and series; we group the genres and correct some by hand). Licence: CC0 1.0.
- GeoNet earthquake catalogue, Earth Sciences New Zealand — the Earthquakes database in SQL Challenges (we convert the times to New Zealand time and add macrons to the town names). Licence: CC BY 3.0 NZ. GeoNet content is copyright Earth Sciences New Zealand and is licensed under a Creative Commons Attribution 3.0 New Zealand License.
- Natural Earth — the world map in Country Profiles, and the New Zealand outline in GPS Triangulator, through world-atlas (below). Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com.
- Software Engineering Code of Ethics and Professional Practice, ACM and IEEE Computer Society — its eight principles, paraphrased, in Ethics & Licensing's dilemmas.
- Code of Conduct, BCS, The Chartered Institute for IT — its four duties, paraphrased, in Ethics & Licensing.
- Yeo et al. (2011) — the networks in Brain Networks are drawn after their map. Yeo, B. T. T. et al. (2011). The organisation of the human cerebral cortex estimated by intrinsic functional connectivity. Journal of Neurophysiology, 106(3), 1125–1165.
Exam questions
The past-paper questions in IGCSE Exam Coach, AS Essay Writer , Assembly Tracing and IT Pseudocode are Cambridge International Education’s, reproduced or adapted for revision with the paper each comes from named. The model answers, checklists and the other questions are our own, written to the published mark schemes and examiner reports. The four Pseudocode pages check code against Cambridge’s published pseudocode conventions: the pseudocode section of the IGCSE Computer Science (0478) syllabus, the AS & A Level Computer Science (9618) Pseudocode Guide for Teachers, and the AS & A Level Information Technology (9626) syllabus and its papers.
- Cambridge International Education — past question papers, mark schemes and examiner reports (IGCSE Economics 0455, AS & A Level Economics 9708, IGCSE Computer Science 0478, AS & A Level Computer Science 9618 and its predecessor 9608, AS & A Level Information Technology 9626), the 0478 syllabus’s pseudocode section and the 9618 Pseudocode Guide for Teachers.
Te reo Māori terms
The te reo Māori in each Key Terms list comes only from these sources; where none of them has a term, we leave a gap rather than make one up.
- Dictionary of Māori Computer and Social Media Terms, Karaitiana Taiuru.
- Paekupu, Ministry of Education | Te Tāhuhu o te Mātauranga.
- Te reo financial glossary, Reserve Bank of New Zealand | Te Pūtea Matua.
- Te Kete Ipurangi (TKI), Ministry of Education.
- NZQA, New Zealand Qualifications Authority | Mana Tohu Mātauranga o Aotearoa.
- Te Aka Māori Dictionary — to check a term's meaning.
Photographs of computer parts (PC Builder)
The motherboards, processors, memory, drives, coolers, graphics card, power supply, case, cables, desk and the monitor, keyboard, mouse, printer and router on it in PC Builder are photographs from Wikimedia Commons, used under the licence each gives. We have cut each out of its background (and rotated or colour-corrected some); our changed images are shared under the same licence as the original.
- MSI B550 Tomahawk 19354, Michael Wolf — the motherboard. Licence: CC BY-SA 3.0.
- AMD Ryzen 5 5600X, Phiarc — the Ryzen 5 5600X. Licence: CC BY-SA 4.0.
- AMD Ryzen 7 5800X3D, Phiarc — the Ryzen 7 5800X3D. Licence: CC BY-SA 4.0.
- AMD Ryzen 5 3400G, Phiarc — the Ryzen 5 3400G. Licence: CC BY-SA 4.0.
- Intel CPU Core i7 12700K Alder Lake top, Eric Gaba (Sting) — the Core i7-12700K. Licence: CC BY-SA 4.0.
- 16 GiB-DDR4-RAM-Riegel RAM019FIX Small Crop 90 PCNT, PantheraLeo1359531 — the 16 GB DDR4 module. Licence: CC BY 4.0.
- RAM Module (SDRAM-DDR4), ElooKoN — the 8 GB DDR4 module. Licence: CC BY-SA 4.0.
- Samsung 980 PRO PCIe 4.0 NVMe SSD 1TB-top PNr°0915, D-Kuru — the NVMe SSD. Licence: CC BY-SA 4.0.
- SAMSUNG SATA SSD 870 QVO 2TB FRONT, Dinkun Chen — the SATA SSD. Licence: CC BY-SA 4.0.
- Seagate BarraCuda Compute 2TB 3.5-inch SATA HDD - top view, ITEagle Europe - Sebastiaan Brongers — the hard disk drive. Licence: CC BY-SA 4.0.
- MSI GeForce RTX 3070 VENTUS 3X OC, TheStriker — the graphics card. Licence: CC BY 4.0.
- AMD Wraith Spire cooler, Ilya Plekhanov — the Wraith Spire cooler. Licence: CC BY-SA 4.0.
- Hyper 212 Evo 4 2018-10-31, FASTILY — the tower cooler. Licence: CC BY-SA 4.0.
- Hyper 212 Evo 3 2018-10-31, FASTILY — the tower cooler from above. Licence: CC BY-SA 4.0.
- Kingston FURY Impact DDR5 SO-DIMM Laptop Memory 32GB Module - front view, ITEagle Europe - Sebastiaan Broekhoven — the DDR5 SO-DIMM. Licence: CC BY-SA 4.0.
- Corsair 4000D Airflow mid-tower ATX case, PJ — the case. Licence: CC BY-SA 4.0.
- 2023 Płyta główna Asus ROG STRIX Z690-A GAMING WIFI, Jacek Halicki — the Intel motherboard. Licence: CC BY-SA 4.0.
- Материнская плата форм-фактора MicroATX, SenkYou — the Micro-ATX motherboard. Licence: CC BY-SA 4.0.
- SK hynix 16GB DDR5-5600 UDIMM HMCG78AGBUA084N BA, ITEagle Europe - Sebastiaan Broekhoven — the DDR5-5600 module. Licence: CC BY-SA 4.0.
- 2023 Pamięci Corsair Vengeance RGB, Jacek Halicki — the DDR5-6000 module. Licence: CC BY-SA 4.0.
- ATX Computer power supply unit, Dmitry Makeev — the power supplies. Licence: CC BY-SA 4.0.
- Dell Computer Monitor, IT Photography — the monitor. Licence: CC BY-SA 4.0.
- Wireless Computer Keyboard, Pixloom — the keyboard. Licence: CC BY-SA 4.0.
- Generic computer mouse with scrollwheel, Peter Astbury — the mouse. Licence: CC0.
- TP-Link TL-WR740N router HS1 transparent, Hayden Schiff — the router. Licence: CC BY 4.0.
- HP LaserJet 1020 printer, Joydeep — the printer. Licence: CC BY-SA 3.0.
- HDMI Cable 1, Kannan shanmugam, shanmugam studio, Salem — the HDMI cable. Licence: CC BY-SA 4.0.
- Displayport-cable, Belkin — the DisplayPort cable. Licence: CC BY-SA 3.0.
- USB Cable Type A-1 PNr°0002, D-Kuru — the USB cable. Licence: CC BY-SA 3.0 AT.
- Patch cable with RJ45 connector, www.heimnetzwerke.net — the Ethernet cable. Licence: CC BY 4.0.
- Cabo de forca computador 01, Luis Dantas — the power cord. Licence: Public domain.
- Wood Texture Background, Bango Textures — the desk. Licence: CC0.
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3D models (Hexa-Tac 3D)
The city, turret and UFOs in the 3D game on Hexa-Tac are free packs from the Unity Asset Store, used under its standard licence; we scale, light and arrange them.
- SimplePoly City - Low Poly Assets, VenCreations — the city's shops, houses and tower blocks. Licence: Unity Asset Store EULA (Standard).
- Free Low Poly Simple Urban City 3D Asset Pack, Draftpunk Studios — more of the city's buildings. Licence: Unity Asset Store EULA (Standard).
- Cartoon City FREE - Low Poly City 3D Models Pack, ithappy — the towers on the skyline. Licence: Unity Asset Store EULA (Standard).
- Tower Defence Sci-Fi Turret (FREE), Firadzo Assets — the defence turret. Licence: Unity Asset Store EULA (Standard).
- UFO Battleship, FlexUnit — the UFOs. Licence: Unity Asset Store EULA (Standard).
Fonts
- Archivo, The Archivo Project Authors — headings. Licence: SIL Open Font License 1.1.
- Source Sans 3, Adobe — text. Licence: SIL Open Font License 1.1.
- IBM Plex Mono, IBM Corp. — numbers and code. Licence: SIL Open Font License 1.1.
- Google Fonts — the fonts above, and any font a subscriber picks for their theme (each under its own open licence).
- Caveat, The Caveat Project Authors — the handwriting on the Circuit Dash, Run the CPU, Normal Form or Not?, Schema Architect, File Sizes and Bits on the Wire cards' videos, and on Bits on the Wire's computers. Licence: SIL Open Font License 1.1.
- Share Tech Mono, Carrois Type Design, Ralph du Carrois — the code over the Assembly Tracing and Trace Tables cards' videos, and the 0 and 1 over Parity Check's. Licence: SIL Open Font License 1.1.
- OCR-A, Matthew Skala, from Richard B. Wales's and Tor Lillqvist's METAFONT versions — "Hex" on the Hexa-Tac card's video, and the SQL over SQL Challenges'. Licence: Free use: public domain (Matthew Skala); Richard B. Wales: "You may do anything you wish with this font definition".
- Patrick Hand, Patrick Wagesreiter — "a-Tac" on the Hexa-Tac card's video. Licence: SIL Open Font License 1.1.
- Press Start 2P, CodeMan38 — "Pixel" on the Pixel Painter card's video. Licence: SIL Open Font License 1.1.
- Dancing Script, Impallari Type — "Painter" on the Pixel Painter card's video. Licence: SIL Open Font License 1.1.
Software
- Bootstrap, the Bootstrap team — page layout and styling. Licence: MIT.
- sql.js, the sql.js contributors (SQLite, compiled to WebAssembly) — the database each student queries in SQL Challenges, in their own browser. Licence: MIT.
- SQLite, D. Richard Hipp and the SQLite developers — the database engine inside sql.js. Licence: Public domain (SQLite).
- D3, Mike Bostock and contributors — the charts and map in Country Profiles. Licence: ISC.
- TopoJSON client, Mike Bostock — drawing the world map. Licence: ISC.
- world-atlas, Mike Bostock — the world map's country outlines and GPS Triangulator's New Zealand outline, from Natural Earth. Licence: ISC.
- Unity, Unity Technologies — Hexa-Tac 3D, built for the web as WebGL.
- jsDelivr — where some of the data comes from (fetched by this site's server).