Página — Uerakua Anapu Uantakua Projects And Readings 2° Secundaria (pág. 112)

1. To start the discussion and understand that technical advances have helped humanity from the beginning, in communities and with the help of your teacher, reflect on how human beings have enhanced their capabilities by using tools, machines, or instruments. Ask yourselves questions such as:

a What is technology?

b) How was food preserved before refrigeration processes were invented?

c) How was water heated before metal containers existed?

d) How were large buildings, such as pyramids, built with no heavy machinery like cranes?

e) How has it been possible to explore space?

f) How have the ways of communicating changed?

2. Write the answers in your notebook. You can revise these reflections during your project.

It's worth acknowledging that technical advances not only respond to technological devices such as computers, sensors, robots, or satellites, but they are also part of the history of humanity and have allowed us to solve endless problems.

The information included in the table below will help you identify the characteristics of instruments,tools, and machines.

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	What Are They?	Examples
Instruments	Objects manufactured or made up of a combination of pieces which are used to perform a job or an activity. They are useful for measuring or exploring some phenomena or processes in greater detail.	Microscopes, magnifying glasses, needles, thermometers, scales, clocks
Tools	Devices used in mechanical work that requires the exertion of some physical force to execute tasks with greater precision and dexterity.	Scissors, tweezers, scalpels, screwdrivers, hammers
Machines	Set of mobile and fixed elements which operation makes it possible to harness, direct, regulate, or transform energy. They enhance physical strength to move heavy objects, and to fix, measure or record data or events.	Pulleys, stretchers, wheelbarrows, motor vehicles, meters, monitors

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