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Learning your kid begs to do.

Standards-aligned math, reading, and science for ages 6 to 12, disguised as games kids want to play. Built with teachers. Trusted by parents. Never boring.

  • No credit card
  • Cancel anytime
  • 15-minute sessions
Nucleus
  • COPPA compliant
  • Zero ads
  • We never sell your child's data
  • Common Core aligned
  • Built with teachers
Over 50+ more games inside

Play these Demos.On Us!

Experience real gameplay in seconds — no account, no setup.

You already know the pattern

The 6pm struggle is real.

Learning apps promise the world and deliver flashcards. We built the one we wished existed.

Child refusing homework

Homework battles

“I don’t want to!” Every evening turns into a standoff. Even 10 minutes feels like negotiation.

Smartphone with a child's game

Screen-time guilt

You hand them a tablet to get through dinner prep. Nothing on it is actually helping them learn.

Theater mask representing pretend learning

Apps that pretend

Cartoons, points, confetti — zero substance. Kids bounce off. You cancel another subscription.

How it works

Three steps. No flashcards. No whining.

01

Choose their grade

Sign up in 60 seconds. Nucleus calibrates to your child’s grade and confidence level on day one.

02

They play. Really play.

15-minute adventures with drag, tap, build, and solve. Every interaction is a standards-aligned skill in disguise.

03

You see it click

Weekly parent reports show exactly what your kid mastered — and where they’re ready to push further.

Everything your child needs to thrive

Built for how kids actually learn.

Standards-aligned, without the worksheet feel

Every game maps to Common Core and TEKS learning goals — but your child experiences it as dragging, tapping, sorting, and building. Rigor stays high; cognitive load stays low.

Visible reasoning

Kids show their work by building it. You can see exactly how they solved each problem — not just whether they got it right.

Interactive, gamified learning platform

Learning happens through fun, engaging games that keep kids interested and motivated. By turning concepts into playful experiences, the platform makes it easier for learners to stay focused and enjoy the process.

Play based mastery

Learning is driven through interactive play that reinforces core concepts across subjects—from foundational math to reading and science. One seamless experience supports well-rounded skill development.

Weekly parent reports

Every week you get a one-page summary: skills mastered, moments of effort, and exactly what to celebrate.

Our commitment to you

We designed Nucleus for 15 minutes, not endless scroll.

Every decision on this platform is made with one question: would we give this to our own kids? If the answer is no, it doesn’t ship. Ever.

  • Zero ads. Kids will never be marketed to inside Nucleus.
  • No dark patterns. No “just 5 more minutes” popups. Sessions end when they should.
  • COPPA-compliant. Your child’s data is never sold, ever. Full stop.
  • No in-app purchases aimed at kids. Billing lives with you, not them.
What teachers are saying

Real classrooms. Real results.

“Nucleus is a strong, student-friendly platform. The games are aligned to grade level standards, the visuals support understanding, and the built-in UDL design gives learners many scaffolded ways to access the content. It truly helps students build fluency and confidence.”
ER
Erika R.
Experienced Educator & Curriculum Developer. San Antonio, TX
“It helped my students learn and retain key math concepts. The games gave them repeated practice with strategies in a fun way.”
MH
Marcela H.
Teacher, SouthSan ISD · 16 yrs teaching
Pricing

Start free. Upgrade when you love it.

No credit card to start. Cancel any time in one click.

Free
Enough to know if your kid loves it.
$0 /forever
  • 1 subject (Math)
  • Weekly parent reportcoming soon
  • Full COPPA protection
Start free
Nucleus +
Everything, for up to 4 kids.
$12 /month
  • All subjects
  • Up to 4 Users
  • Unlimited sessions
  • 30-day money-back guarantee
FAQ

Questions parents actually ask.

Nucleus is built for ages 6–11 (1st through 8th grade). We place each child based on a short, low-pressure calibration — so a struggling 8-year-old and a confident 6-year-old both start at the right level.

Printables and Worksheets

Print, play, and discover! These screen-free activities range from crafts and games to educational worksheets—ideal for boosting creativity and developing skills at any time of day.

G4 Math Center Games Worksheet (Grade 4)

A printable pack of 4th-grade math center games and worksheets — ready to print, play, and practice at home.

G1 Math Worksheet (Grade 1)

A worksheet that can be colored in.

G1 Reading Worksheet (Grade 1)

Colourful worksheet for Math Lovers.

Your kid's next “I did it!” is 15 minutes away.

Free to start. No credit card. No catch.