Recipe Scale

Proportional reasoning

Set the tool to the amount the card asks for.

Starting level. Saved on this device.

Try 5 practice measures. Nothing is timed, and a hint follows each answer.
Then play a 60 second round. The fractions get trickier as you get them right.

Click or drag on the tool to set the amount. With a keyboard, focus the tool, press the arrow keys and then Enter to confirm. The hint button costs half the points.

How to play

Recipe Scale practices working with fractions and scaling. Each card asks for an amount, such as 2/3 = ?/6, or to double or halve a measure. Set the measuring tool to the right number of marks by clicking or dragging on the tool itself, then confirm. With a keyboard, focus the tool, use the arrow keys to move one mark at a time and press Enter to confirm. The hint button shows how to convert, and halves the points of that answer.