Fraction Forge
Build fractions you can actually see
About Fraction Forge
Slice bars and circles to build, compare and combine fractions. Every answer is checked against the picture, not just the numbers.
Ankhdase tracks 4 distinct skills in Fraction Forge, including Naming fractions, Equivalent fractions, Comparing fractions and Adding fractions. Because mastery is estimated per skill rather than per game, the questions shift toward whatever a student is getting wrong — and away from what they have already proved they know.
There are 4 modes to choose from: Name it, Equivalent, Compare and Add & subtract.
How to play
- Fractions are shown as bars and pies so you can see the size, not just the numbers.
- Shade mode lets you click the parts of the bar yourself.
- Compare mode wants the sign that goes between the two fractions.
Skills Fraction Forge practices
- Naming fractions
- Equivalent fractions
- Comparing fractions
- Adding fractions
Mastery is estimated separately for each of these, which is what lets the difficulty move independently — a student can be fluent on one and still be fed easier questions on another.
Questions about Fraction Forge
- Is Fraction Forge free to play?
- Yes. Fraction Forge is free, runs in any modern browser, and needs no download or plugin. You can play straight away without an account; signing in is only needed if you want progress, streaks and badges saved.
- What age is Fraction Forge for?
- Fraction Forge suits ages 8–12 — roughly Grade 3 to Grade 6. The difficulty adapts as you play, so it stays useful across that whole range rather than being pitched at one year group.
- What does Fraction Forge teach?
- It practices Naming fractions, Equivalent fractions, Comparing fractions and Adding fractions. Every question is tagged with the skill it exercises, so progress is tracked skill by skill rather than as one overall score.
- Does Fraction Forge work on a tablet or phone?
- Yes. Fraction Forge works with touch as well as a mouse, and every drag action has a tap-to-select alternative. Once the page has loaded once it also keeps working offline.
- Can teachers assign Fraction Forge?
- Yes. Teachers can create a class, add students in bulk without email addresses, and set Fraction Forge as an assignment with a goal — a score, a number of minutes, stars or a typing speed. Progress updates automatically as students play.