Sources we draw from.
Algo School curates educational material from a small, vetted set of websites and YouTube channels. This page is the full list — so parents can preview, verify, and trust the material their kids see. We curate SPECIFIC videos and articles from these sources, not every video the creator has ever uploaded.
Web domains
Every article or page we link to lives on one of these domains. URLs from any other domain are rejected by our curation tooling before they can land in the bank.
Major educational platforms
Public broadcasting & government
Publishers & open educational resources
Math-specific
Reading, ELA, and literacy
Reference
YouTube channels by grade band
Channels we draw on for video material, organized by the grade band we typically pin them to. We embed specific lessons we've reviewed — not entire channels. Comments and the "recommended next" sidebar inside YouTube are outside our control, which is why we ask parents to preview before sharing.
| Grade band | Channels | Notes |
|---|---|---|
| K-2 | Numberblocks Numberock | BBC Numberblocks builds number sense; Numberock for songs. |
| 3-5 | Math Antics Numberock Math with Mr. J Mashup Math | Mr. J = surgical CCSS-skill coverage with 1,200+ videos. |
| 6-8 | Math Antics Khan Academy Math with Mr. J Eddie Woo Cognito | Eddie Woo is an award-winning Australian teacher; Cognito covers UK GCSE (≈ US gr 7-10). |
| 9-12 | Khan Academy Eddie Woo The Organic Chemistry Tutor Brian McLogan | Organic Chemistry Tutor covers Algebra→Calc despite the name; McLogan has 12,000+ tightly-scoped videos. |
| 9-12 enrichment | 3Blue1Brown | Conceptual essence-of-calculus / linear-algebra only — NOT pinned for routine skill practice. |
How we curate
- Math practice questions come from 175+ deterministic generation engines we wrote — not from external sources. A fraction engine knows how to make a "compare ¾ and ⅔" question correctly, every time.
- Web articles are added one URL at a time via our internal curation CLI, which validates the domain against the list above before allowing the insert. The article also passes an HTTP accessibility check and a duplicate check.
- YouTube videos are searched via the official YouTube Data API, pinned to grade-appropriate channels, and added one verified video at a time. We don't auto-pull channel feeds.
- Explanations and hints are AI-authored and human- reviewed before they ship.
Found something off?
If something we've curated looks inappropriate, inaccurate, or just off for your kid's grade — please tell us. Email support@algoschool.app with the concept name (or a link from your child's practice) + what concerned you. We read every report and use them to remove material when warranted.
This list is current as of today. Domains and channels may be added or removed over time; the most accurate version is always this page.