Personalized K-12 Learning for Every Student
773+ skills and 77,000+ practice questions across Math, Language Arts, Science, Social Studies, and Financial Literacy — all grades Pre-K through 12th.
Why Choose Second Brain Kids?
773+ Skills, 5 Subjects
Math, Language Arts, Science, Social Studies, and Financial Literacy — all grades Pre-K through 12th, one flat price.
AI Tutor Built In
Our AI tutor explains wrong answers instantly, adapts to each student’s pace, and gives hints without just giving away the answer.
Parent Dashboard
Track every child’s progress across all subjects. See which skills need work, assign practice, and get weekly email digests.
Learn How to Learn
Questions are delivered in spaced batches of 25. Wrong answers trigger AI explanations — not just the correct answer. Students build retention, not just scores.
Choose Your Grade Level
Personalized learning paths for every student from Pre-K to 12th grade
Pre-K
Counting objects, shapes, letter names, rhyming words, and more.
Kindergarten
Comparing numbers, shapes, letter sounds, plants and animals, communities.
First Grade
Adding and subtracting, vowel words, light and sound, rules and laws.
Second Grade
Place-value models, contractions, plants and animals, historical figures.
Third Grade
Multiplying and dividing, pronouns, weather and climate, geography.
Fourth Grade
Fractions and decimals, synonyms, fossils and rock layers, government.
Fifth Grade
Multiplying fractions, idioms, photosynthesis, molecules, economics.
Sixth Grade
Ratios and percentages, Greek and Latin roots, genetics, ancient history.
Seventh Grade
Proportional relationships, phrases and clauses, engineering design, world history.
Eighth Grade
Linear functions, Pythagorean theorem, active voice, chemical formulas, civics.
Ninth Grade
Quadratic equations, figures of speech, biomolecules, cell division.
Tenth Grade
Congruent triangles, geometric constructions, chemical bonding, American Revolution.
Eleventh Grade
Precalculus, literary analysis, physics, economics, and U.S. history.
Twelfth Grade
Calculus, college prep writing, environmental science, government.
Explore Our Subjects
Mathematics
From basic counting to advanced calculus
Language Arts
Reading, writing, grammar, and literature
Science
Biology, chemistry, physics, and earth science
Social Studies
History, geography, civics, and culture
Financial Literacy
Saving, budgeting, investing, and real-world money skills
Practice doesn't build a second brain. Understanding does.
Most K-12 practice platforms are answer machines. You get a question, you pick an answer, you move on. If you're wrong, you try again. That's not learning — that's trial and error with a timer.
Questions per batch
Cognitive science is clear: shorter, focused sessions beat marathon drilling. 25 questions is enough to build a skill without hitting the wall where nothing sticks.
Not just what
When a student gets a question wrong, the AI tutor doesn't just show the right answer. It explains the reasoning — the rule, the pattern, or the concept that was missed. Students learn to think, not just to remember.
Questions per skill
Spaced repetition works when there's enough material to space. 100 questions per skill means a student can return to the same topic across multiple sessions without repeating the same 10 problems.
"Second Brain" isn't a metaphor. It's a method. The goal isn't to memorize answers — it's to build the mental models that let a student solve problems they've never seen before. That's what we're building toward.
Why We Built This
"IXL is excellent. It's also $79.95/month for a family. That's a car payment."
We built Second Brain Kids because comprehensive K-12 practice shouldn't require a subscription that costs more than most families spend on groceries in a week. The content gap between a $10/month platform and an $80/month platform shouldn't exist — and with modern AI tools, it doesn't have to.
Every subject. Every grade. One price. No per-subject upsells. No "premium" tier that locks away the good stuff. Just practice.
How It Works
Three steps. No setup. No curriculum planning. Just open it and practice.
Pick a Grade & Subject
Choose from Pre-K through 12th grade across Math, Language Arts, Science, Social Studies, or Financial Literacy. The platform shows exactly which skills are available for that grade.
Practice in Batches of 25
Each skill has 100 questions, served in focused sets of 25. Short enough to stay sharp. Long enough to actually build the skill. No infinite scroll, no time pressure.
AI Explains Every Mistake
Wrong answer? The AI tutor explains why — in plain language, at the student's level. Not just the correct answer. The reasoning behind it. That's how retention actually works.