Crossword

5. A message written on a piece of paper, put inside an envelope, and sent to someone far away through the mail.
7. Very old drawings made on the stone walls of caves by early humans thousands of years ago.
8. A type of writing used in Ancient Egypt that used pictures and symbols instead of letters.

1. A secret language that changes letters into short clicking sounds (dots) and long clicking sounds (dashes).
2. A set of letters that we mix and match to build words and write down stories.
3. A short, instant electronic note sent from one mobile phone or tablet to another.
4. PRESS, An old machine that stamps ink onto paper to make books, newspapers, and school worksheets very quickly.
6. A device that catches invisible signals traveling through the air so you can listen to music, sports, and news.