WORD BUILDING · LEARN THROUGH PLAY

Prefix Match

Use a meaning clue to choose the base word that fits a prefix. Learn how prefixes such as un-, re-, and pre- change a word.

Build a new word

Use the meaning clue to choose the base word that fits the prefix. Check how the complete word is formed.

Your practice round

Choose your pace, then start. Review each answer before you move on.

Try a timed challenge30 seconds per question. You can pause the timer.

Untimed practice is selected by default. A correct first attempt earns one point; Show answer helps you learn without adding a point.

Ready: 10 questionsRound score: 0Untimed

A little help as you play.

Start without a timer. Give yourself time to understand each question.
Read the explanation. A mistake is a chance to notice something useful.
Move on when you’re ready. Choose Next question after reviewing the answer.

How do I choose an answer?

Tap or click one answer to check it. The correct answer is marked and explained. Choose Next question to continue. On a keyboard, use Tab to reach a button, then Enter or Space.

How does the score work?

A correct first attempt earns one point. Revealing an answer, running out of time or correcting a previously wrong order earns no point for that question. You can still learn from the explanation.

Can I pause a timed round?

Yes. Choose Pause timer, then Resume timer when you are ready. The timer also pauses if you leave the page in the background.