Week 21 - Machines Help Us Do Work

Lesson 2

Read pages 258 to 260 and 315 to 320

Lesson 2: Trial and Error

Scientists, engineers, and manufacturers of machines often rely on trial and error to construct devices or to fix errors. Typically, they try one thing, and if it doesn't work, they try something else. The development of rockets was no exception.

Rockets have been used for centuries. From fireworks to Intercontinental Ballistic Missiles to the Space Shuttle, humans have used rockets as weapons of war, for celebrations, and to explore the last frontier. In this lesson, you will learn more about rockets and then build your own film canister rocket. As you read through the history of rockets, be sure to note the failures that occurred as well as the successes.

Exercise 1.2: Rocket History