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FractionForge fraction workshop — kids slicing a pie into equal wedges, stacking fraction bars, and sliding a marker on a tick number line

FractionForge

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3 of 4 equal pieces: 3/4.

Cuts every piece in two. The shaded amount stays the same.

Number Line Fraction games

Master fractions with hands-on tools you can touch — split a pie, slide a marker on the number line, stack bars to add. Everything runs right here in your browser, nothing is saved off your device.

Start here

Number Line Slide a marker to place a fraction between the whole-number ticks. Change the Whole Pick which rod is the whole, and watch the same rod become a different fraction. Tape Diagram Shade equal parts of a bar to picture a fraction of the whole. Word Problems Share a cake fairly and solve real fraction story problems.
Brain Break Take a quiet moment between rounds — a fun teaser or a short breather. Brain breaks help you remember what you learn.

✨ New — The Fair-Share Kitchen

Run a bakery for the cast! Every order is a fraction in disguise — Halver cuts, Gather combines same-size pieces, Stretch rescales, Dot plates a decimal, Equi shares fairly, and Rank wants the bigger slice (with proof).

🍰 Open the kitchen →

What the six tools do
Fraction Workshop

Split a bar and a pie into equal parts and shade them to build any fraction.

Number Line

Slide a marker to place fractions in their exact spot between 0 and 1.

Operation Lab

Stack two bars at a common denominator to see adding and subtracting.

Decimal Bridge

Shade a hundred-square to link fractions, decimals, and percents.

Compare & Order

Line up two fractions and decide which is bigger.

Set Model

Shade some of a group of counters — a fraction of a set of things, not one whole cut up.

Choose a challenge

Each challenge is a short 10-question round. Grade bands are a guide, not a gate — play any of them.

Fraction Workshop

Kit 1: Fraction Basics

Fraction Basics · grades 4-5
 Number Line

Kit 2: Equivalent Fractions

Equivalent Fractions · grades 4-5
 Compare & Order

Kit 3: Comparing & Ordering Fractions

Comparing Fractions · grades 5-6
 Operation Lab

Kit 4: Adding & Subtracting Fractions

Adding and Subtracting Fractions · grades 5-6
Show the other 12 challenges
Operation Lab

Kit 5: Multiplying Fractions

Multiplying Fractions · grades 6-7
 Fraction Workshop

Kit 6: Mixed Numbers & Improper Fractions

fractions · grades 4-5
 Decimal Bridge

Kit 7: Fractions, Decimals & Percents

fractions · grades 6-7
 Fraction Workshop

Kit 8: Ratios & Proportional Relationships

ratios · grades 6-7
 Fraction Workshop

Kit 9: Fractions in Real-World Contexts

Mathematics · grades 5-6
 Operation Lab

Kit 10: Fraction Operations Mastery

Mathematics · grades 6-7
 Fraction Workshop

Kit 11: Critical Analysis & Evaluation

Equivalent Fractions · grades 6-7
 Fraction Workshop

Kit 12: Integration & Review

Equivalent Fractions · grades 7-8
 Fraction Workshop

Kit 13: Cross-Topic Connections

Equivalent Fractions · grades 5-6
 Fraction Workshop

Kit 14: Real-World Applications

Equivalent Fractions · grades 6-7
 Fraction Workshop

Kit 15: Misconceptions & Reasoning

Equivalent Fractions · grades 6-7
 Fraction Workshop

Kit 16: Advanced Synthesis

Equivalent Fractions · grades 7-8

More ways to play

The Orange Table Ahmes's Loaves Fair Share Court Quiz Arena Fraction Run Frontier Fractions Bot
Where this idea comes from

The Rhind papyrus

An Egyptian scribe named Ahmose copied this book of maths problems around 1550 BCE, from an older text about 300 years earlier. The Scottish lawyer Alexander Henry Rhind bought it in Luxor in 1858; it is now in the British Museum.

One thing to hold: A papyrus scroll about five metres long, written in ink, with dozens of problems: sharing bread, measuring fields, the slope of a pyramid.

Why it matters: Egyptian scribes wrote fractions as sums of different unit fractions (one-over-something); only 2/3 had a sign of its own. The scroll opens with a table for 2 divided by every odd number up to 101 — so 2/5 is written 1/3 + 1/15.

What we don’t know: How scribes chose which unit fractions to use is not fully known; the table does not explain itself.

Sources: British Museum, EA 10057 and EA 10058 (the Rhind Mathematical Papyrus) · Annette Imhausen, Mathematics in Ancient Egypt (Princeton University Press, 2016)

FractionForge mascot

Meet the cast — the characters who teach this

Each one stands for an idea you’ll practice. Tap a character to read their illustrated story and hear their audio drama.

Ensemble stories — the cast together

Explore all the stories →

What next? Pick a door

Chosen from what this app is about. What you open is remembered on this device only.

📚 Books for FractionForge

Read the story, print a workbook, or color the cast — free PDFs to read offline or print at home.

Browse all books →

Same idea, another world

Something you practice here shows up somewhere else too — that's real learning that travels.

Splitting a whole into equal parts is the same proportional thinking behind ratios. The shared idea: proportional reasoning — a part compared to a whole is a ratio Try RatioRealm → A fraction is a part of a whole — the same way the chance of an event is the favorable outcomes out of all of them. The shared idea: part compared to a whole — a fraction is a part over a whole, exactly how a probability counts favorable outcomes over all of them Try ChanceForge → A fraction has its own spot on the number line — the same distance-along-the-line that places any whole number. The shared idea: the number line — a fraction sits at its own position between the whole numbers, the same distance-along-a-line that places any number Try NumberSense →

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