22
Lesson 22 of 84 · Past, Present, and Future
Lighting: Candles to LEDs
Transportation has changed a lot! From walking and riding horses to driving cars and flying in airplanes, people keep finding new ways to travel.
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?