Slicewell

Fractions you can touch. Slicewell asks for a fraction and lets you build it: cut a pie into equal slices and shade some of them, shade a bar to show the same amount with more parts, or put two fractions together into one bar.

Every answer is checked by value, so 2/4 counts for 1/2 and you see why. A wrong answer is never just a red cross: the right picture appears, with its simplest form, before you move on.

• Five stages, ten tasks each: cut the pie, which is bigger, same amount, adding like parts, adding unlike parts
• Pies and bars: equal slices and parts you shade by tapping or with the keyboard
• Stars: three for 9 or 10 right, two for 7 or 8, one for 5 or 6; stars are saved
• Mistakes teach: the right picture and the simplest form are shown
• Challenge mode: mixed tasks that get harder, three lives, best run saved
• Keyboard or touch: every task works with either

Code and text written with AI assistance; checked by PN Scripts with automated tests. Every shape is drawn and every sound synthesised by code; there are no AI-generated image or audio files.

Controls

• Tap slices or parts to shade them, + and − buttons to change the number of parts
• Left / Right: fewer or more parts, Up / Down: shade more or less, Enter / Space: check
• Compare tasks: tap the bigger one or press Left / Right
• Stage list: arrow keys and Enter
• P / Esc: pause, M: sound

Made by PN Scripts.