All practice tools
Fractions
Change the numbers and watch the fraction change shape. Nothing here is marked — try things out and see what happens.
Build a fraction
The denominator says how many equal parts the whole is split into. The numerator says how many of those parts you have.
Bar model
Pie model
Fraction of an amount
Divide by the bottom, then multiply by the top. The bar below shows the amount cut into equal parts.
Mixed numbers and improper fractions
Both sides show the same amount. Watch the whole shapes and the leftover part as you change the numbers.
Which way round?