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Roman Numerals: I, V, X and More
Kids crack a secret treasure code and learn Roman numerals: the seven letters I, V, X, L, C, D, M, and three rules. Same letters add, big before small adds, small before big takes away, and never more than three in a row.
How it works
- Press play to start the video.
- Videos 5 minutes or longer pause once or twice for a quick check. Get it right and you're on your way. If not, you'll see a friendly explanation and the video simply keeps going. Short videos skip the checks.
- At the end there's a 4-question test. Score 60% or more to complete the lesson, and 80% or more to master it. You can always watch again and try for a higher score.