18
Lesson 18 of 84 · Past, Present, and Future
Books and Reading Over Time
People used to write letters to talk to faraway friends. Now we can call, text, or video chat with anyone in the world!
Key Facts
1
Schools looked different long ago.
2
People used horses before cars were invented.
3
Some things stay the same through history.
Check Your Understanding
Question 1
1 of 2What is an artifact?