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Electricity: The invisib le Genie. Electricity brings to us energy, quietly and cleanly, virtually Instantly, anywhere and in practically unlimited amounts from far and close places, to help make our lives better:. To make and keep places lighted

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Electricity the invisib le genie

Electricity: The invisible Genie

Electricity brings to us energy, quietly and cleanly, virtually

Instantly, anywhere and in practically unlimited amounts

from far and close places, to help make our lives better:

  • To make and keep places lighted

  • To make and keep places and food hot or cold

  • Help us do work that needs force and movement

  • Help us collect, create, manage and display data as

  • information and ideas, such as text, numbers, voice

  • sound, music, video, animations and intelligent controls

Can you tell where the genie is at work in your home?

Do you know which professionals specialize in designing and making devices and machines to produce and use electricity better? Electrical and Electronics Engineers


Electricity the invisib le genie

Electricity: The invisible Genie

What is electricity?

  • Electricity is the movement of energy carried by excited

  • electrons, mostly in conductive (conductor) materials.

  • Electricity moves very fast, and can be very strong. The

  • electrons in electricity always carry companion

  • (electro)static and (electro)magnetic fields around them.

Where does electricity come form?

  • Electricity or electric energy can be produced by exciting

  • the electrons in materials, when doing things like:

  • rubbing materials against each other (surfaces)

  • inducing electrons using magnetic fields (magnets)

  • bumping electrons out of their atoms using sun light

  • rays (photons) or special chemical reactions (in fuel cells)

Have you tried making electricity yourself?


Electricity the invisib le genie

DEVICES AND TOOLS THAT ALLOW CREATION OF ELECTRICITY:

MAGNETS and COILS MOVING NEAR EACH OTHER AND PULLING ELECTRONS

INTO WIRE CIRCUITS

SPECIAL CHEMICAL REACTIONS UNBALANCING ELECTRONS IN BATTERIES

and FUEL CELLS

DEVICES AND TOOLS THAT ALLOW THE USE OF ELECTRICITY:

RESISTORS and THERMAL ELEMENTS FOR HEATING

RESISTORS and LIGHT-EMITTING ELEMENTS FOR ILLUMINATION

ELECTROMAGNETIC COILS and ELECTRIC MOTORS FOR FANS AND ROTATING TOOLS

MOTORS and HYDRAULIC COMPRESSORS FOR COOLING AND REFRIGERATION

MOTORS and SOLENOIDS FOR HYDRAULIC COMPRESSORS AND TRANSPORTATION

ELECTROMAGNETIC DEVICES FOR CODING INFORMATION,

COMMUNICATIONS , DATA PROCESSING, PRESENTATION AND STORAGE


Electricity the invisib le genie

A

Long

Time

Ago,

We lived like this - because we had not

learned how to make and use electricity.Can you tell what was different then?


Electricity the invisib le genie

STEM

LEARNING ABOUT ENGINEERING AND ELECTRICITY IN SCHOOL:

The purpose of the California State education Common Core k-12 Curriculum Standards (CCSS) is to ensure a good understanding of concrete and abstract ideas related to science, technology, engineering and mathematics in our classrooms. Learning is hoped to focus into fewer, but central and coherently related topics in the quantitative subjects, which include teaching and learning about electricity. The standards aim to promoting embracing and mastering the concepts, rather than memorizing routines mindlessly. For this, teaching is suggested to include more hands-on experiences, focused on core, useful real life things and activities.

TECHNOLOGY

ENGINEERING

COMMON

CORE?

SCIENCE

MATHEMATICS



Electricity the invisib le genie

Political

IMPROVING EDUCATION IS

DIFFICULT, BECAUSE EDUCATIONAL

SYSTEMS are COMPLEX

Technological

Pedagogical

TPACK

Area Content Knowledge

Operational

O

DEALING WITH

P

Interconnected Components in Education