Maths that meets every student where they are.

BBright builds adaptive maths learning and assessment for schools: tools that find each student’s gaps, help them close those gaps, and show teachers progress through the year. Proven in Lithuanian classrooms, designed for school systems anywhere.

40,000+students

have learned with our tools.

240+schools

already use our learning tools.

Global ChampionWorld Summit Awards 2026

Recognised among the world’s top young innovators.

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One learning system. Three ways into every classroom.

Maths learning built around what each student needs next.

Diagnostic tests find the gaps. Lessons, video and step-by-step practice close them. Teachers assign ready-made material in a few clicks.

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Hello!

Operations with natural numbers

»

Now: Column addition and subtraction

Continue lesson 50 ★

Relevant todayTuesday, 13 October

Daily challengeSolve one task and test yourselfAccept challenge · 10 ★★

Assigned by teacherPrime and composite numbersPart 1 · pp. 43–45 · by 23 OctoberStart

Your learningSearch content

Grade 52 of 35 lessons completed

Division and number skillsPractise each skill and track your progress

Long divisionNew

Division with remainderNew

Multiplication and divisionLearning

RoundingMastered

Word problemsLearning

Comparing numbersMastered

Start learning →

Tests that help, not punish.

One adaptive test, three times a year. Teachers see which skills are secured, and every student leaves with a personal plan.

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A year-long programme that secures the maths foundations every later topic depends on, for a whole year group at once.

Skill-by-skill practice in fractions, division and equality, with teacher support and a spring olympiad. In Kaunas it runs city-wide for fifth graders, with the municipality. One goal: 100% for everyone.

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Built by students who struggled with maths and a teacher who knew how to help.

Mantas Vičius and his classmates struggled with maths at school; the gaps kept piling up until no one could say where exactly they were stuck. In 2021 he and Mykolas Kalmatavičius set out to build the tool they had wished for.

Doc. Dr. Vilija Dabrišienė, a maths teacher with more than 20 textbooks to her name, worked with them from the very start and became an equal co-founder.

BBright co-founders Mantas Vičius, Doc. Dr. Vilija Dabrišienė and Mykolas Kalmatavičius — Mantas, Vilija and Mykolas

Our mission

To identify every student’s exact knowledge gaps and close them, one concept at a time.

Our vision

A world where a student’s postal code does not determine their maths ability.

Get in touch

Let’s talk.

For ministries, districts, school networks, education partners and investors who want to bring adaptive maths learning and assessment to more classrooms. Book a call with us, or write to mantas@bbright.lt.

Mantas Vičius

Co-founder and CEO

Tomas Šiurna

Chief Innovation Officer

Elicėjus

Maths learning built around what each student needs next.

Elicėjus is designed to uncover the gaps students build up over the years and point their practice at them, with lessons aligned to Lithuania’s national curriculum. Teachers get a ready-made library to assign from.

elicejus.lt (Lithuanian)

Hello!

Operations with natural numbers

»

Now: Column addition and subtraction

Continue lesson 50 ★

Relevant todayTuesday, 13 October

Daily challengeSolve one task and test yourselfAccept challenge · 10 ★★

Assigned by teacherPrime and composite numbersPart 1 · pp. 43–45 · by 23 OctoberStart

Your learningSearch content

Grade 52 of 35 lessons completed

Division and number skillsPractise each skill and track your progress

Long divisionNew

Division with remainderNew

Multiplication and divisionLearning

RoundingMastered

Word problemsLearning

Comparing numbersMastered

Start learning →

Diagnose

Find out what’s missing before the lesson.

A topic can open with a short diagnostic test. Up to 10 questions across topics identify the student’s skills, then it recommends which topics to revisit first.

Up to 10 questions across topics
Recommended topics to revisit
Completed in one sitting

Practice

Every kind of maths exercise, with fresh examples to practise.

Lessons and exercises follow the national curriculum, textbook-based materials and the most common mistakes. Regenerating exercises give fresh examples of the same concept, so students practise the idea, not an answer.

Multiple choice and data tables
Geometry and graphs to drag, measure and sketch
Step-by-step solutions with guided feedback and hints

Multiple choice

Which sets are finite?

A{x | x < 905; x ∈ ℕ}
BThe set of three-digit natural numbers
CThe set of natural numbers

Regenerate the exerciseReveal the answer

Data table

Fill in the table of values for the function f(x) = 30x + 10.

x	0	2	4	6	8	10
y	10	70	130	190	250	310

Regenerate the exerciseReveal the answer

Geometry

Apply translations to the object below:

To the right by 4 squares;
Up by 5 squares.

Regenerate the exerciseReveal the answer

Step by step

5(x − 3) = 2x + 1Enter your calculation here

Regenerate the exercise

5(x − 3) = 2x + 1
5x − 15 = 2x + 1
5x − 2x − 15 = 1
3x − 15 = 1
3x = 16
x = 163

Every day

A clear path through every grade.

Students work through their grade lesson by lesson, with diagnostics, practice and tests along the way. Their home page gathers today’s assignments, teacher tests, a daily challenge and their exam countdown.

A learning path through every lesson of the grade
Today’s assignments and teacher tests in one place
A daily challenge and an exam countdown

Hello!

Operations with natural numbers

»

Now: Column addition and subtraction

Continue lesson 50 ★

Relevant todayTuesday, 13 October

Daily challengeSolve one task and test yourselfAccept challenge · 10 ★★

Assigned by teacherPrime and composite numbersPart 1 · pp. 43–45 · by 23 OctoberStart

Your learningSearch content

Grade 52 of 35 lessons completed

Division and number skillsPractise each skill and track your progress

Long divisionNew

Division with remainderNew

Multiplication and divisionLearning

RoundingMastered

Word problemsLearning

Comparing numbersMastered

Start learning →

For teachers

Everything ready to assign.

A library of exercise collections, organised by grade and type, plus exam preparation and printable PDF templates. Teachers can build their own sets too, and assign any of them as a test.

Independent and final collections
Preparation for national exams
Assign as a test in a few clicks

Exercise collectionsYour and Elicėjus’s exercise-collection bank. Assign them to students as a test.

Elicėjus collectionsExam preparationPDF templatesMy collections

Elicėjus collectionsFilter by type ▾Filter by grade ▾ Search

NameTasksLevelType

Roman numerals11Gr. 5IndependentAssign⋮

Roman numerals6Gr. 5FinalAssign⋮

Rounding natural numbers13Gr. 5IndependentAssign⋮

Natural numbers on the number line and comparing them5Gr. 5IndependentAssign⋮

Natural numbers: basics7Gr. 5FinalAssign⋮

Place value. Writing natural numbers7Gr. 5IndependentAssign⋮

123…75Next ›

Assign as a test

Partnerships and pilots

Explore Elicėjus for your schools.

Elicėjus was built with Lithuanian teachers around Lithuania’s curriculum. For ministries, districts and school networks elsewhere, we start from your curriculum, languages and goals, and shape a pilot that fits your classrooms.

Who we work with

Ministries and national education agencies
Districts and school networks
Education partners and foundations

or email us

01
Tell us what you need
Your goals, curriculum, grades and language.
02
Run a pilot
We shape the pilot together and support your teachers.
03
Review the results
We look at the results together and decide what comes next.

See Elicėjus in action.

Book a call and we’ll walk you through a lesson, the diagnostic test and the teacher library.

PROTAU

Tests that help, not punish.

PROTAU is an adaptive maths test for schools. It shows teachers which skills each student has secured and which still need work, and turns every result into a personal plan for what to learn next.

protau.lt (Lithuanian)

How it works

One test. A clear picture. A plan for every student.

Here’s what happens in a PROTAU session, from the first sign-in to the student’s next step.

Grades 5–1245 or 90 minutesAdapts as you answer

For teachers

The whole class, not just a score.

Right after the test, teachers see each student’s results and the class at a glance: how many students have secured each skill, area by area, and an improvement plan for each group. Each student’s PROTAU score on the 400–1300 scale is added about a month after the session closes.

Every student’s results, right after the test
How many students have secured each skill
Group improvement plans before the next session

StudentsSkillsImprovement plan

Skill ability distribution

Numbers38 skills testedModels60 skills testedGeometry44 skills testedData16 skills tested

SkillStudents testedSkill secured

Can solve an equation where a fraction equals zero (a/b = 0, b ≠ 0)321›

Can solve quadratic inequalities graphically422›

Models a range of real-world and mathematical situations with rational equations422›

Applies the compound percentage formula to solve problems422›

Can solve systems of equations where one equation is linear and the other rational422›

Can rewrite an equation as one fraction equal to zero (A/B = 0, B ≠ 0) and solve it321›

StudentsSkillsImprovement plan

Improvement plansLessons student groups should revisit before the next PROTAU test.

←11DReview lessons in groupMain classStudents who revisited

›Factorising a quadratic trinomial: the formula0/1

›Motion problems0/1

›Solving systems where one equation is linear and the other rational0/3

›Angle bisectors of a triangle: properties0/2

›Medians of a triangle: properties0/2

›Inscribed triangles0/2

›Circumscribed triangles0/1

Through the school year

Three sessions show how students move.

Each session takes 45 minutes in grades 5–9 and 90 minutes in grades 10–12.

September–OctoberAutumn
A diagnostic test on earlier grades. Every student gets an improvement plan.
January–FebruaryWinter
Checks which of this year’s skills are already secured and which need attention. Plans are updated.
May–JuneSpring
Sums up the year’s ability scores and skills, with a detailed report.

Partnerships and pilots

Explore a PROTAU pilot.

PROTAU gives Lithuanian schools a comparable, skill-by-skill picture of maths three times a year. If your district, region or ministry needs that picture, we design a pilot around your grades, timing and the questions you need answered.

Who we work with

Ministries and assessment agencies
Districts, regions and municipalities
School networks and research partners

or email us

01
Tell us what you need
What you want to measure, in which grades and how you will use the results.
02
Run a pilot
We plan a session together; students take the test and teachers receive results.
03
Review the results
We look at the findings together and decide what comes next.

See a PROTAU session for yourself.

Book a call and we’ll take you through a session, from the first question to the student’s plan and the teacher’s class view.

Slenkstiada

The threshold level. Essential for everyone.

A year-long programme for an entire year group, built on the Elicėjus learning system, with skill-by-skill practice, teacher support and a spring olympiad. In Kaunas, it runs city-wide for fifth graders with the municipality and the Kaunas Education Innovation Centre.

slenkstiada.lt (Lithuanian)

Foundations first

The basics that everything else is built on.

Fractions, division and equality come back in ratios, equations and algebra. Slenkstiada gives fifth graders a whole year to practise them, skill by skill.

Natural numbers and operations
Divisibility and fractions
Decimal fractions

Skill by skill

Secured means secured.

Every topic is broken into skills, each with its own practice. A skill only counts as secured when its tasks are solved independently, on the first try, several times in a row, and secured skills come back for review.

Practice for every single skill
Attempt history for each skill
Secured skills are offered again for review

A year, together

Practice all year, an olympiad in spring.

Short practice fits into lessons and continues at home. Teachers see every skill a student has attempted, how often it was solved on the first try and when it’s due for review. The year ends with a maths olympiad in spring.

Practice in class and at home
Every attempted skill, visible to the teacher
Spring olympiad for fifth graders

Attempted skillsTeacher view of one student

Skill ↑First tryPracticeReview

Rounds numbers up to 1,000,000 to a given accuracy4/44 times in a row2026-11-15

Writes Arabic numbers (1–39) in Roman numerals7/94 times in a row2026-11-16

Compares two numbers4/44 times in a row2026-11-15

Writes Roman numbers (1–39) in Arabic numerals9/99 times in a row2026-11-16

Writes a number as the sum of its place values3/42 times in a row2026-11-13

Orders up to 4 numbers in decreasing order3/43 times in a row2026-11-15

Writes numbers given in short form3/40 times in a rowNot yet secured

Knows the value of a digit’s place3/43 times in a row2026-11-13

Writes numbers given in words2/30 times in a rowNot yet secured

Partnerships and pilots

Bring a programme like Slenkstiada to your city.

Kaunas shows what a city can do when it commits to maths foundations for a whole year group. We share how it runs, and design with you what a programme could look like in your city or region.

Who we work with

Cities and municipalities
Regional education authorities
Foundations and partners that fund education

or email us

01
Tell us what you need
Your year groups, goals and local education context.
02
Run a pilot
We shape a programme with you, including practice and teacher support.
03
Review the results
We learn from the pilot together and decide what comes next.

Imagine this in your city.

Book a call to hear how Kaunas runs Slenkstiada, from the first practice to the olympiad.