Kids (about seven to ten) get naming and comparing. Tweens get all four levels, and Teens start from comparing.

What a fraction means, comparing fractions, equivalent fractions, and adding fractions with the same denominator, always under one whole.

Does it get harder by itself?

Yes. After a run with at most one slip it moves up to the next level and says so. You can also pick a level by hand at any time.

What happens to wrong answers?

The right answer is shown, and that question comes back more often later. The end of a round lists the ones worth another look.

No ads are shown in the Kids area. Scores from Kids are never posted to a public leaderboard.

Yes. It is free in your browser, with no download and no account needed.

Slices

Teens

About Slices

Fractions with the picture attached. Name what is shaded, judge which of two is bigger from the bars, fill in an equal fraction, then add two with the same bottom number. It moves up a level when a run goes clean, and back down when it does not.

Slices teaches fractions with the picture always attached. Children name the shaded part of a shape, pick the bigger of two fractions from their bars, fill in the missing number in an equal fraction, and add two fractions with the same bottom number. Because the shape is on screen, the answer can be worked out by looking rather than remembered.

Tips

Count the slices first, then the shaded ones. The total number of slices is the bottom number, and the shaded ones are the top.
When comparing, look at the bars, not just the digits. A bigger bottom number means smaller pieces, which surprises most children the first time.
For equal fractions, ask what the bottom number was multiplied by, then do the same to the top.
When adding, only the top numbers add up. The bottom number stays the same, because the size of the pieces has not changed.
The level picker at the top lets you choose what to practise. The game also moves up a level by itself once your child gets nearly every answer right in a row.
Cut a pizza, a cake or a sheet of paper into equal parts at home and ask what fraction is left. Real pieces make the pictures on screen make sense.

Questions

What age is it for?: Kids (about seven to ten) get naming and comparing. Tweens get all four levels, and Teens start from comparing.
What does it teach?: What a fraction means, comparing fractions, equivalent fractions, and adding fractions with the same denominator, always under one whole.
Does it get harder by itself?: Yes. After a run with at most one slip it moves up to the next level and says so. You can also pick a level by hand at any time.
What happens to wrong answers?: The right answer is shown, and that question comes back more often later. The end of a round lists the ones worth another look.
Are there ads?: No ads are shown in the Kids area. Scores from Kids are never posted to a public leaderboard.
Is it free?: Yes. It is free in your browser, with no download and no account needed.