How It Works
For math, every concept has a structured lesson that teaches it — with stories, guided examples, and hands-on activities. After each lesson, the adaptive engine gives practice at exactly the right level. For reading, 157 structured lessons teach your child to read while the engine reinforces every skill. Science brings hands-on experiments. One system powers it all — placement to mastery, Pre-K through 8th grade.
It starts with one assessment
When your child first starts, a short adaptive placement asks 2–3 questions per skill. Get two right in a row and the system skips ahead. Struggle on a skill and it steps back to find the boundary. Within minutes and about 20–30 questions, it maps exactly what your child knows and what they're ready to learn.
Your 8-year-old might place at 2nd-grade multiplication and 4th-grade geometry. That's not a problem — that's the starting point. This assessment happens once. From there, the system takes over.
One-time placement
Addition Within 5
Passed (2/2) — skip ahead
Addition Within 20
Passed (2/3) — advance
Addition Within 100
Not passed — step back
Addition Within 10
Passed (2/2)
Start here: Addition Within 100
Highest passed skill — 11 questions, 4 skills tested
Every day after that
Once the placement is done, sit with your child for about 15–20 minutes each day. A structured lesson teaches the concept with a story and guided examples. Then the adaptive engine gives practice at exactly the right difficulty. The lesson teaches. The engine makes it stick. You get to watch them learn.
For math, your child starts each concept with a structured lesson — a read-aloud story that introduces the idea, walks through guided examples, and checks understanding with a short quiz. Every skill from counting to algebra has its own lesson. After finishing a lesson, your child moves straight into adaptive practice on that same skill.
The adaptive engine adjusts difficulty based on how your child responds. Struggling? It steps back and reinforces the foundation. Breezing through? It moves forward. The placement test determines where lessons start — a child who places at 3rd grade never sees the kindergarten lessons they've already mastered.
Behind the scenes
3 correct in a row
System increases complexity
2 mistakes on same skill
System provides guided example
Consistent accuracy
System advances to next skill
Most curricula teach a concept, test it once, and move on. Lumastery brings it back. A skill your child learned on Monday is revisited on Thursday, then the following week, then two weeks later.
This is spaced repetition — the same evidence-based technique that makes language learning apps effective, applied to math and reading skills. A skill is only marked “mastered” after consistent accuracy across multiple review sessions.
Spaced review schedule
Structured math lessons
Before your child ever sees a practice problem, they get a structured lesson that teaches the concept. Each lesson uses a read-aloud story, visual examples, hands-on activities, and a short quiz — designed to be done together in about 10–15 minutes.
Every math skill from counting and number recognition through fractions, decimals, algebra, and statistics has its own lesson. After each one, a “Practice This Skill” button takes your child directly into adaptive practice on that exact concept. The lesson teaches the idea. The engine makes sure it sticks.
The learn → practice flow
Step 1: Lesson
Read-aloud story introduces the concept with guided examples and a short quiz
Step 2: Practice
Adaptive engine gives practice at exactly the right difficulty for your child
Step 3: Spaced review
Skill comes back days and weeks later to verify mastery over time
Mastery-based progression
Every skill in Lumastery is mapped to its prerequisites. Multiplication requires addition fluency. Fractions require an understanding of division. The system enforces these dependencies automatically.
Your child can't skip ahead without demonstrating they've mastered the foundation. And when they do master a skill, the next step is already queued — no planning required on your part.
One correct answer is not mastery. Consistent accuracy across multiple sessions is.
Prerequisite chain
Science, K through 8th grade
Science modules cover physical science, life science, and earth and space science across every grade. Each interactive lesson teaches the concept on screen, then comes with a companion at-home experiment guide so your child gets hands-on with what they just learned.
Science works differently from math and reading — it's structured by topic and grade rather than driven by the adaptive engine. Your child explores concepts like forces and motion, living things, weather, atoms, and ecosystems through guided lessons designed for how children actually learn science: by observing, questioning, and experimenting.
Science strands
Physical Science
Forces, matter, energy, waves, atoms
Life Science
Living things, body systems, ecosystems, heredity
Earth & Space
Weather, rocks, water cycle, solar system
Every lesson includes an at-home experiment guide
Kitchen-table experiments using everyday materials
Parent controls
Choose how math is taught, track progress across math, reading, and science, and get weekly reports that tell you what happened and what's coming next. You focus on being present — not on lesson prep.
Toggle between traditional (facts, procedures, fluency) and conceptual (number bonds, place value reasoning) for each child. Change it any time.
See every child's progress in one place. Skills mastered, skills in progress, and what the system is adjusting next. No spreadsheets.
Every week: skills practiced, skills mastered, accuracy trends, and what the system is focusing on next. Clarity, not data overload.
Visual teaching
Every concept is taught with clear, visual explanations designed for how children actually learn. Browse real examples from Pre-K through 8th grade.
How many stars?
Counting Objects
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Learn to Read: Letter Sounds
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7 out of 10
Number Sense
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3 + 2 = 5
Addition
Tap to learn more
8 − 3 = 5
Subtraction
Tap to learn more
Hundreds, tens, and ones
Place Value
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Carry when a column adds to 10 or more
Column addition with carrying
Regrouping
Tap to learn more
3 × 4 = 12
3 rows of 4
Multiplication
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The quick fox jumped over the lazy dog.
Grammar: Parts of Speech
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3/4
Three fourths
Fractions
Tap to learn more
Measuring rectangles
Area & Perimeter
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Plotting points
Coordinate Plane
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3 × 2 × 4 = 24 cubic units
3D measurement
Volume
Tap to learn more
Reading Comprehension
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55° + 35° = 90°, complementary!
Complementary angles
Angle Relationships
Tap to learn more
Circumference & area
Circles
Tap to learn more
3² + 4² = 9 + 16 = 25 = 5²
Right triangles
Pythagorean Theorem
Tap to learn more
Pre-K·Counting Objects·1 of 17
What you see as a parent
All of your children in one place. See their current skill levels, recent progress, and what's being worked on today. No switching between accounts or apps.
Working on Multiplication · Times Tables & Fluency
Working on Addition · Sums to 20
Working on Counting · Counting to 20
Skills practiced, skills mastered, accuracy patterns, and what the system is adjusting next. You open the report and know exactly where your child stands.
5
Sessions
47
Exercises
91%
Accuracy
5
Day Streak
Working at 2nd grade level
Typical for age: 1st grade
Working at 1st grade level
Typical for age: 1st grade
91% Math
30 exercises
88% Reading
14 exercises
2 lessons
Science
Emma had a strong week across the board. Her math accuracy on timed addition jumped from 74% to 91%, and she's moved into two-digit subtraction with regrouping. In reading, short vowels are solid and she's starting to blend digraphs. Science: she completed both weather lessons.
Grab a handful of coins and have Emma sort and count the total. Start with pennies and nickels, then add dimes.
When: Saturday morning
Read a short book together and pause on words with "sh" or "ch" — have Emma sound them out.
When: Bedtime, Tues & Thurs
Put 10 crackers on a plate. Eat some, then figure out how many are left. Write the equation together.
When: Snack time
Help with Subtraction Within 100
Teaching subtraction with regrouping
6 min read
Short Vowel Sounds — what's next
From short vowels to digraphs: the next step
4 min read
68 min of focused practice this week.
Sign up, add your child, and sit with them for the first lesson. You'll see exactly where they are and what they're ready for. Free forever for one child. No credit card required.
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