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Unit 2: The engineering process; Lesson 3: How does technology improve our lives

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Unit 2: The engineering process; Lesson 3: How does technology improve our lives

  1. 1. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Copyright © Houghton Mifflin Harcourt Publishing Company
  2. 2. Unit 2 Lesson 3 How Does Technology Improve Our Lives? The Technology Zone • Most of the things people use every day are technology. • Examples of technology include pencils, bikes, light bulbs, clothes, cooking food • Technology doesn’t have to be complex or require electricity. But, technology must meet a human need. Copyright © Houghton Mifflin Harcourt Publishing Company
  3. 3. Unit 2 Lesson 3 How Does Technology Improve Our Lives? The Technology Zone • The way people meet needs changes with time. • In pioneer days, food was prepared in a fireplace, so heavy pans were needed. Today, people can use plastic dishes to cook in microwave ovens. • The need to prepare food hasn’t changed, but the way people prepare food has. Copyright © Houghton Mifflin Harcourt Publishing Company
  4. 4. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Meeting People’s Needs • Technology changes over time in response to people’s needs. • In the 1800s, long-distance communication could take weeks or months. The need for reliable communication increased as people moved west. • As needs increase, new technologies develop faster. Copyright © Houghton Mifflin Harcourt Publishing Company
  5. 5. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Meeting People’s Needs • Through the 1800s, delivering a message crosscountry went from taking 25 days via stagecoach, to one week via railroad, to minutes via telegraph. • In 1915, cross-country telephone service began. Eighty years later, the first smart phone was developed. Copyright © Houghton Mifflin Harcourt Publishing Company
  6. 6. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Technology Risks and Benefits • Technology can have positive and negative effects. • Positive effects, or benefits, are ways that technology fills a need. • Negative effects are risks. This might include constant changes to technology or technology’s negative impact on the environment. Copyright © Houghton Mifflin Harcourt Publishing Company
  7. 7. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Technology Risks and Benefits • No matter what the technology, there are both risks and benefits. • For example, cars allow personal freedom by letting you go almost anywhere and carry heavy items that you could not move on your own. • However, cars use gasoline that is made from oil, a limited resource. They also cause air pollution and can be dangerous if not driven properly. Copyright © Houghton Mifflin Harcourt Publishing Company
  8. 8. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Living Technology • Engineered devices are sometimes used on living things. This connects engineering and biology. • Engineers who work with living things are called bioengineers. • The practice of applying the engineering design process to living things is called bioengineering. Copyright © Houghton Mifflin Harcourt Publishing Company
  9. 9. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Living Technology • Bioengineering can design tools that prevent pollution, engineer plants to grow faster, or design scanners to look inside the body. • Bioengineering can benefit the environment, health, and nutrition. • Any product used to benefit organisms or their environment is an example of biotechnology. Copyright © Houghton Mifflin Harcourt Publishing Company
  10. 10. Unit 2 Lesson 3 How Does Technology Improve Our Lives? Living Technology • Some bioengineers design devices, such as artificial legs, skin, and hearts, that replace human body parts. • These artificial body parts do the same jobs as the human body parts they replace. Copyright © Houghton Mifflin Harcourt Publishing Company

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