CASIO
fx-300ES PLUS
Casio fx-300ES PLUS scientific calculator with Natural Textbook Display, fractions and scientific functions, powered by solar energy with battery backup.
$24.99Demo price
PRECISION IN YOUR HANDS
Big ideas.
Better tools.
Explore physical scientific calculators from Casio and Texas Instruments. Compare models for school and advanced calculations, or discover our future AI device concept.
Physical devices. Carefully considered.01 / SCIENTIFICCASIO fx-300ES PLUS
PRECISION / EVERY DAY√144 + 2³ = 20
READ IT NATURALLYNatural Textbook Display
THE EVERYDAY SCIENTIFICfx-300ES PLUS
Product illustration · appearance may varyBuilt for the way you thinkCompare before you chooseA little help from AI, online
THE COLLECTION
Your next thinking partner.
A considered selection for classrooms, desks, and all the ideas in between.
4 models
CASIO
fx-991CW
Casio fx-991CW ClassWiz scientific calculator with a high-resolution textbook display and tools for equations, matrices and statistics.
$34.99Demo price
TEXAS INSTRUMENTS
TI-30X IIS
Texas Instruments TI-30X IIS scientific calculator with a two-line display, fraction and statistics functions, and solar power with battery backup.
$19.99Demo price
NUMVORI
AI One
A future physical calculator with an embedded AI assistant. A concept, ready to explore.
Demo store · sample prices · no real orders · Product illustration · appearance may vary
FOCUS ON WHAT MATTERS.
curiosity+precisionpossibility.
✱THINK / CREATE / REPEATSMALL TOOL. BIG POSSIBILITIES.
Less distraction. More possibility.
There is something different about a tool made for one thing. A clear display. A satisfying keypress. Your attention, right where it belongs.
Our collection starts with familiar scientific calculators. Our next idea explores what a dedicated AI assistant could bring to a physical device.
Explore the collectionA LOOK AHEAD
What if your calculator could explain why?
Meet Numvori AI One: a design concept for a physical calculator with an embedded assistant. Ask a question. Explore the reasoning. Keep learning.
Explore the conceptA future hardware concept, not an available product. Casio and TI models in this collection do not have built-in AI.
NUMVORI / AI ONEEmbedded assistant · proposedCamera input · under considerationConcept · not for sale
AN INTERFACE IDEA
How it could work.
Interactive concept · not a working device
NUMVORI / AI ONE
√144 + 2³20
1 CALCULATOR 2 AI MODE 3 MODELS> AI MODE
PROMPT: EXPLAIN Solve x² − 5x + 6 = 0[ NEXT ]
MODEL: OpenAI PHOTO: DEMO ONLY[ PHOTO + QUESTION ]
x² − 5x + 6 = 0 (x − 2)(x − 3) = 0x = 2 or x = 3
The website’s existing AI companion uses OpenAI. Selecting a model here only changes this prepared illustration. No camera, model integration or delivery date is promised.
Start with everyday scientific calculations. The proposed device would keep a dedicated calculation mode.
A proposed MODE shortcut would open the assistant. This is an interface simulation, not device firmware.
Tell the assistant what you want to understand. Camera input is an idea under consideration; hardware specifications are not confirmed.
A proposed camera could send the problem to the selected assistant. OpenAI, Gemini and Claude would require separate integrations. This prepared demo does not take a photo or send a request.
The proposed screen would show the explanation. Verify AI reasoning against your calculation; this example is a prepared demonstration.
CHOOSE WITH CONFIDENCE
The right tool starts here.
BUYING GUIDE
Casio fx-300ES PLUS vs fx-991CW: which should you choose?
Compare textbook displays, everyday scientific work and advanced equation and matrix tools before choosing a Casio calculator.
BUYING GUIDEHow to choose a scientific calculator for school
A practical checklist for choosing a physical scientific calculator: course requirements, display, fractions, advanced tools and exam rules.
BUYING GUIDEAI calculators vs scientific calculators: what is the difference?
Understand the difference between a physical scientific calculator, a website AI companion and a proposed calculator with embedded AI.
GOOD TO KNOW
A little clarity.
Before you find your next calculator.
Are these physical calculators?
Yes. The collection features physical calculator models. This website is a store demo: stock, prices, delivery and checkout have not been configured for real sales.
Do the Casio calculators have built-in AI?
No. The listed Casio and Texas Instruments models are conventional scientific calculators. Numvori AI One is a separate future hardware concept. The optional AI companion on this website explains calculations online.
Can I place an order today?
You can try USD checkout with a US address after Stripe test mode is configured. Test transactions are recorded in Stripe; no real money is charged or device shipped. Real sales, shipping and taxes are not enabled.
Which calculator can I use in an exam?
Exam rules depend on the institution, country and exam. Check the exact model with your teacher or exam provider before buying. We do not claim universal exam approval.