🍎 Welcome to iMath

Students go to imath.jagdads.com and stay there. The only grown-up links on that page are two small ones at the very bottom, below the player tiles — a curious child should never land in the class's progress data.

You go to imath.jagdads.com/teachers — this guide — and to imath.jagdads.com/class for the teacher view. Bookmark both.

Your principal gets imath.jagdads.com/principal — a one-page, printable explanation of what iMath stores about students (almost nothing) and why district paperwork isn't triggered. Hand it over before anyone has to ask.

An account is what puts your class on every Chromebook at once and gives you a join link to hand out. The teacher view itself has no password yet, so it is only as private as the device it is open on — keep it off the student Chromebooks until sign-in reaches it.

This is switched on. In four steps:

• You make an account at /account with your email, then either find your school or add it — whoever adds it becomes its administrator and ticks the Terms of Service, which is the entire approval process.
• Colleagues ask to join your school and you approve them, or you send an invite link.
• Each class gets a code and a link like imath.jagdads.com/join?c=ABC234. A child who follows it rolls a nickname, picks a colour and a face, and is playing — no typing, no school search, nothing for you to set up per child.
• Without the link a child can pick their school and then your name from a list. You can switch that off per class, and switch joining off entirely once everyone is in.

Prefer no accounts at all? Skip this entirely — the game still runs on the device exactly as it always has, and a child who has never followed a join link is never asked to sign in.

One click, no setup: the demo student skips the intro flow and has every booth unlocked so you can tour all eight games freely.

Sessions run ~15–20 minutes, 3+ days a week. Wrong answers are never punished — missed facts just come back.

• Fast enough means under 3 seconds for add/sub and 4 seconds for multiply/divide — plus that child's own typing allowance from the warm-up.
• Mastered takes three fast correct answers in a row. A miss resets the run, and a correct-but-slow answer simply doesn't count toward it.
• Mastered facts come back on a spaced-review ladder: 1 day, then 3, then 7, then 14. One miss drops a fact straight back to practicing.
• Games serve the frontier. Nine of every ten problems come from facts already in play — review-due ones first, then facts not yet answered today — and every tenth is a brand-new fact. That is incremental rehearsal: mostly known, one new thing at a time.
• Nothing repeats immediately. A fact rests 60 seconds after a correct answer and 15 seconds after a miss, so no child can be cornered by the same fact twice in a row.
• Three misses in a row flags the family for you and routes it to Axel's Gym for explicit coaching rather than more drilling.
• Power-Up families get airtime. After a student finishes the Daily Power-Up, the families they just worked on appear more often in every game — about one problem in four — so new learning gets played the same day, not shelved.
• Sky Hopper doesn't judge speed. That game rewards waiting for a safe moment, so timing there would punish good strategy. It counts right and wrong only; the other games carry the speed evidence.

• 1 · Re-check. Two quick problems from each family the student focused on last time. Both right — kept it, celebrated. A miss — the child sees the answer, types it correctly, and that family goes back into today's focus. This is how mastery is re-verified at the next sign-in instead of assumed.
• 2 · Today's family. One or two fact families chosen for that child: first any family that failed its re-check, then families the games flagged (misses and unanswered problems are both counted, per fact, forever), then the next new family on the ladder. The child sees the strategy in words, then fills in the whole family — every related equation, untimed. Facts that are really rules (adding zero, times one, times ten) are taught once as the rule, not as eleven separate droning families.
• 3 · The set. A short mixed round — roughly three known problems for every one from today's family. That ~75%-known mix is deliberate: drill research (Burns 2004, across 55 effect sizes) found sets in the 70–85%-known range beat harder mixes, and mostly-known practice is also what keeps an eight-year-old willing to show up.

Sheets are one focused task each, sized for large 3rd-grade handwriting, with scan-anchor marks so completed packets can be photographed and read back automatically. Nothing assumes a game has coins. Phases 2–4 work unchanged for a cardboard-arcade unit — same design loop, cardboard instead of pixels.

Phase 1 prints on its own, landscape, so a worked example sits next to every box the child fills in — plus a handwriting warm-up, because these pages get read back by software. Phases 2–6 are the portrait packet.

🚵 Loon Mountain is the first one. A third grader called River filled in Phase 1 and it is now a booth on the island, next to the seven we wrote ourselves. His sheet said a racing game on Loon Mountain, in orange, green and blue, that should feel excited · speedy · powerful, and: "First, the player is biking. If he gets the math question right he does a trick. If he does it wrong he falls. Also the more you get it right the harder it gets."

That is the game, line for line — right answer, trick; wrong answer, wipeout; the ramps come faster the better you do. Show it to a class before they fill in their own sheets. Nothing convinces a designer to write more detail like seeing another child's detail turned into a booth.

• Two ways to run it, and you choose. Without an account, everything stays in the browser on each Chromebook — nothing is transmitted at all. With a class join link, a player's nickname and math progress are saved to our server so they can sign in on any device. Nothing else changes: the same made-up names, the same complete list of what's stored, in Terms & privacy.
• Made-up names only — the game rolls them. New players get a dice-rolled nickname like ZippyWaffle from a hand-screened word list; there is no way to type a real name (or any words) anywhere in the game. You keep your own paper list of who is which nickname. Never needed: real names, emails, birthdays, photos, or voice recordings. Your email is the only address we hold, and it is yours, not a student's.
• PINs are stored scrambled, and nobody can read them. Not us, not you — the teacher view offers reset, never reveal. Five wrong tries locks that player for fifteen minutes.
• No grades. The teacher view shows fluency progress (which facts are automatic), not scores or grades.
• Character voices are pre-recorded. All audio was generated in advance from our scripts — no student speech or text ever reaches any AI or voice service.
• Paper stays paper until you approve. Worksheet scanning happens through the teacher; nothing a student writes goes online, and packets use nicknames like everything else.
• Erasable on demand. One button in the teacher view removes a student's data from the device; email us and a whole class — nicknames, progress, PINs — is deleted from the server permanently, normally within a few days.

Sharing this with your principal or district? There's a printable one-page summary of exactly what is stored and why the usual permission process isn't triggered: A Note for Your Principal.