ThinkTen
Settings

Settings

Choose how ThinkTen looks, how you answer, and how much voice support you want.

Appearance

Choose a look

This changes the game visually only.
Play

How do you want to work?

Learn

Learn the ThinkTen method

Do not carry the hard problem. Change its shape.

Numbers can be landmarks, distances, groups, and shapes. Learn a few reusable moves, then let the old problem go.

GIVEMove quantity; keep the total.
SLIDEMove both; keep the distance.
BUILDBuild from a fact you know.
UNDOTurn division into multiplication.
Learning Visual

Choose how ThinkTen shows the method

The math stays the same. Your choice controls both Show Me and the post-answer pictured review.

Post-answer Review Show the selected visual after each correct answer.
Training matches your visual. Each learning style has its own training sequence.
How the game works
The basic loop
1Hear or read the problem.
2If PREDICT appears, decide whether the answer should be odd or even.
3Transform the problem into the easiest useful form, then solve it.
4Use Show Me when the path is not obvious.
Why PREDICT?
Odd and even give you a fast expectation for the answer before you calculate it, which creates a built-in error check.
Same parity → even   •   Different parity → odd
Voice & feedback

Choose how much help you hear

Voice answers Let ThinkTen listen for spoken answers and training responses.
Microphone is off.
Voice input depends on browser support. Chrome or Edge usually provides the strongest experience.
Nothing is timed until you start the game.
ThinkTen

Ready when you are.

Start a round when you're ready. Settings and Training are available here whenever you want them. Nothing is timed until you press Start Game.

Level1
Round1
FocusMixed
Problems10
VOICE HANDS-FREE MIC OFF TAP ANSWERS FORGE CLASSIC
Think the ThinkTen way: transform the problem into a friendlier form, then solve.
Clear progress and start ThinkTen fresh.
THINKTEN FRACTIONS
Start with meaning, not rules

A fraction is pieces of one whole.

First see the WHOLE. Then see how it was CUT into equal pieces. Then COUNT how many pieces you have. MATCH comes later, only when different piece sizes must be combined.

Current Stage

See a Fraction

STAGE 1

Rounds0
Problems0
First Try—
Stage1
Read a fraction this way
COUNTpieces you have
34
CUTequal pieces in the whole
One WHOLE · CUT into 4 equal pieces · COUNT 3
ThinkTen Fraction Language

Only four ideas

Rule for this system: if the picture does not make the idea easier to understand, we are not ready to teach the rule yet.
FRACTIONS STAGE 1 Problem 1 of 10 Flow 0
SEE

Look at the whole.

LANGUAGE LENS
WHOLE first. Then CUT. Then COUNT.
ThinkTen Fractions

The picture is becoming the math.

First Try0%
Core IdeaCUT
Best Flow0
Stage1
DECIMALS STAGE 1 Problem 1 of 10 FOUNDATION Flow 0
SEE

One whole. Ten equal pieces.

LANGUAGE LENS
Decimals are fractions built from tens.
ThinkTen Decimals

The decimal is becoming a picture.

First Try0%
Core IdeaTENTHS
Best Flow0
Stage1
PERCENTAGES STAGE 1 Problem 1 of 10 FOUNDATION Flow 0
SEE

Percent means out of 100.

LANGUAGE LENS
Percent is another way to name part of a whole.
ThinkTen Percentages

Percent is becoming a relationship.

First Try0%
Core IdeaOUT OF 100
Best Flow0
Stage1
ThinkTen Training · LEARN IT

Current ThinkTen Focus

Training follows the focus and stage you selected. Nothing here is scored or timed.

Step 1 of 6
ThinkTen Competition

Live Duel

Create a room or join another player. ThinkTen shows when both players are online, ready, playing, finished, or disconnected.

Realtime Competition

Play Together

Find another player automatically or open a private room for someone you know.

Offline
↯
Automatic Matchmaking

Quick Match

No room code. ThinkTen finds another available player, connects both of you privately, and enables Live Chat.

PRIVATE ROOM Invite a specific person with a code

Create Room

OR

Join Room

Live Duel does not change adaptive progress.
Level 1 Problem 1 of 10 Mixed Focused Play ◆Flow 0 ◇Moves 0/3
Predict
Before you solve it, will the answer be odd or even?
Predict first. Then solve. Your prediction gives you a quick way to check the answer.
Transform the problem
47 + 8
LANGUAGEFind the easier equivalent form.
Tap your answer
Paused

Game paused.

The problem is hidden and the active timer is stopped.

Round complete

Well done.

Advance to the next level

ROUND SIGNATURE
You found the structure.
First Try—
Average Time—
Predict—
Pauses—
Why this matters: You are building number intuition, not just chasing correct answers.