Algebra 1 is where math
stops making sense.
Bija is where it takes root.
Algebra 1 is the single most decisive course in school — the one that quietly decides who keeps going in math. When it slips, kids don't just lose points; they lose the thread. Bija rebuilds that thread, one proven skill at a time, and shows you the exact place it broke.
Most apps hand you a percentage. Bija hands you the mistake.
There's plenty of free math video out there. It'll tell you your daughter is 62% through a unit. It won't tell you why she keeps getting it wrong.
When she misses a question, Bija's AI reads her actual answer and names the misconception behind it — the thing a good tutor would catch.
A plain-words recap of every session
No raw score dump. After each sitting, Bija writes you a short, human summary — what they worked on, what clicked, and the one thing worth practicing together — built from the exact skills and misconceptions behind the work.
- One warm sentence per session, not a wall of numbers
- The specific mistake, named — with a fix a tap away
- Mastered skills and recurring slips, at a glance
The course that decides everything
Researchers call Algebra 1 the gatekeeper: failing it is one of the strongest predictors that a student won't finish high school on time. It's where abstract math begins — and where, for a lot of kids, it stops making sense.
So we didn't try to boil the ocean. Bija does Algebra 1 and Geometry, deeply — Algebra 1 alone is 118 skills across 14 units, wired into a real prerequisite graph. That's not a gap. That's focus on the part that matters most.
- Every skill gated behind the ones it depends on
- Algebra 1 + Geometry live today; Algebra 2 next
- Start from wherever it first got shaky
Built on how people actually learn math
Not a video library you binge and forget. A structured path where every step is earned before the next one opens.
Mastery, not minutes
A skill only turns gold when you get five right in a row. Miss one and the streak resets — because "kind of got it" isn't mastery.
Infinite fresh questions
Every problem is generated fresh, so the numbers change on every attempt. You can't memorize an answer key — you have to learn the method.
A path that grows with them
Master a skill and the next ones sprout open. Combining like terms unlocks only after adding negatives is solid — never before.
No wall of 100 topics — just your next step
New here? A two-minute adaptive check finds exactly where your math stands. It checks off what you've already mastered and drops you in at the first thing that's genuinely new — so day one is a win, not a scroll. Too easy or too hard later? Re-take it any time to move up or down.
- An adaptive placement, not a fixed starting line
- Everything you already know, checked off up front
- Change your level whenever it stops fitting
A plan every day — and it catches the mistake you keep making
Open the app and there's one clear next thing: reviews that are due, the next skill to grow, a streak to keep. And when the same slip shows up across sessions, Bija names it and hands you a focused drill — "you keep flipping the sign distributing a negative; here's the fix." It pays attention the way a good tutor would.
- A daily plan, not a wall of topics to self-triage
- Recurring mistakes caught and turned into a targeted drill
- Streaks that reward showing up, day after day
Learn it, then prove it
Each skill opens with a quick teach, then drops you into practice. Type your answer, hit check, get instant feedback. Stuck? A Socratic hint nudges you to the next step — and when you want the deeper why, ask Bija anything. It explains the idea; it never just hands over the answer.
- Real questions, real math notation
- Hints that teach, not tell
- An ask-anything tutor for the "but why?"
Master it once. Keep it for good.
Mastering a skill isn't the finish line — it's the start of a schedule. Bija uses spaced repetition to resurface each skill right before it would fade: a day later, then a week, then a month out. Clearing what's due earns double Roots, so keeping old skills sharp always feels worth it.
- Reviews surface exactly when memory starts to fade
- One good answer schedules it further out
- 2× Roots for clearing what's due
Every problem helps you grow
Harder skills and longer streaks earn more Roots. Roots grow you up a living ladder — from a first Seed to an Old-Growth Redwood, where the top stages are genuinely rare.
Grow a forest with your school
Every problem your school solves grows its forest a little taller. Each season the whole school grows one of the world's great woods — Sherwood first, all the way to the Amazon. Standings rank by average growth per student, so a small, dedicated crew can out-grow a school ten times its size.
- Pick your school and rep it on the leaderboard
- School vs. school — no individual is ever singled out
- A new forest and fresh standings every season
A fraction of the price of a tutor — with more visibility
The real alternatives to a struggling Algebra 1 kid aren't free videos. They're a tutoring center or a private tutor — costing hundreds a month, on someone else's schedule.
Plant the first seed
Algebra 1 and Geometry are live. Sign in with a phone number and start from wherever it first got shaky. Free for families, always.