How Levers Help Us
Watch NowThis instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
This instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
![2 + 2 = 22 [The Alphabet]](https://image.tmdb.org/t/p/w500//xZmFnEC2gNQq2NjIpoLYaws5TRO.jpg)
![Streetscapes [Dialogue]](https://image.tmdb.org/t/p/w500//lbaDCCZJ6xwvNLO5qFDBmjnjaOH.jpg)
