12
Lesson 12 of 84 · Past, Present, and Future
Medicine: Past and Present
Music has changed too. People used to listen to music on phonographs and radios. Now we can stream music on phones and tablets.
Key Facts
1
Some things stay the same through history.
2
Technology keeps changing how we live.
3
Life has changed a lot over time.
Check Your Understanding
Question 1
1 of 2What is a timeline?