Building Fluency

Mastery Check

Decode a mixed challenge of letters, numbers, and punctuation.

Learn these signals

This lesson’s signals are S, O, 1, 2, ?, ., /, =, +. Hear each one, then type the character it stands for.

Click to hear

Decode the Morse

Decode S, O, 1, 2, ?, ., /, =, + from Morse. Look at the · − pattern (and listen), then type the character it stands for.

Morse signal

···

What character is this? Type it on your keyboard.

Tip: click Hear signal to play this Morse once.

Remember