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miércoles, 29 de abril de 2015

MY ASSIGNMENT MODULE 3 ICT IN SECONDARY

In our class today there are three moments: a) we will correct your answers to the web quest on electricity. 10 minutes. b) In pairs, students share their comments about this blog which summarize the main spots during our school year in Tecnology. 15 minutes. b) we will disscus using FOUR CORNERS TECHNIQUE PROS AND CONS OF BLOG as a learning tool. 30 minutes. Conclusions will be posted on the blog.

WORKSHOP PROJECT: Sliding door

MECHANISMS Part II

1.1    Linear motion mechanisms
Linear motion mechanisms transmit motion and force in a straight line from one point to another.
·      LEVER: is a rigid bar that is supported by a fulcrum. Fulcrum is the point of a bar around which it pivots, moves or is supported. The following equation indicates a balanced lever:
F . d = R . r
It´s called the law of the lever. There are three types of levers:
Class 1
Class 2
Class 3
The fulcrum is between the effort applied and the resistance.
The effect of the effort can be multiplied or reduced.
Pliers and pins are class 1 levers.
The resistance is between the fulcrum and the effort applied.
The effect of the effort applied is alwais multiplied (d>r).
Wheelbarrow, nutcrackers and paper cutter are class 2 levers.
The effort applied is between the fulcrum and the resistance.
The effect of the effort applied is always reduced (d<r).
Rod, broom and tweezers are class 3 levers.

·      FIXED PULLEY: is a wheel that has a groove around it into which a rope, chain or belts fits.
It rotates around an axle that is fixed to an immobile surface. A fixed pulley is balanced when the effort F is equal to the resistance of the load, R. It´s used to raise and lower loads easily.
·      MOVABLE PULLEY: is a set of two pulleys. One is fixed while the other can move in a linear direction.
A movable pulley is balanced when F = R / 2
·      COMPOUND PULLEY: is a system of fiwed and movable pulleys, often called a block and tackle.
If we use more pulleys, the system becomes more complex, but less effort is needed to move the load. There are always an even number of pulleys. Half is fixed and half movable.
A block and tackle (compound pulley) is balanced when F = R /2n where n is the number of movable pulleys.

MECHANISMS

MECHANISMS
Definition: mechanisms are devices that transmit and transform force and motion from a driving force (input) to an output.
They allow us to carry out certain tasks more easily and more efficiently.
Unit summary

1.- Transmitting motion:
1.1 Linear: Lever (class 1, class 2, class 3), fixed pulley, movable pulley, compound pulley.
1.2 Circular: Friction drives, pulleys with belts, gear mechanisms and cogwheels, worm gear, gear mechanisms with a chain, gear train, pulley train with belts.

2.- Transforming motion:
2.1 From rotary to linear: Rack and pinion system, nut and bolt system, winch and crank handle.
2.2 Fron rotary into reciprocating motion: Crank-link-slider, crank shaft, cam and eccentric cam.

3.- Controlling and directing motion: Ratchet, brake (disc, band and drum).

4.- Storing energy: Spring (compression, traction, torsion), shock absorber, suspension system.

5.- Joining: Clutch (friction or with teeth), joining (fixed or movable).

6.- Support: Bushing, bearings.


Key words:
Gear: mechanism used to change the speed or direction of transmitted motion.


Cam: rotating object that transmits motion to a rod in contact with it.

INTRODUCTION TO SPREADSHEETS: EXCEL

martes, 28 de abril de 2015

USING COMPUTERS FOR YOUR PROJECTS: SPREADSHEETS

UNIT 4 SPREADSHEETS
         Spreadsheets are used to enter numerical or logical data. You can link cells with other cells and do arithmetic, statistical and financial calculations.
·       They are made up of cells arranged in a grid. Each cell has a name, made up of the letter of the column an de number of the row in which is located.
·       You can enter numerical data into a cell and/or refer to the number in another cell. For exemple, =100*F6 multiplies the value of cell F6 by 100.
® Formulae and functions
            A formula is an expression that refers to another cell or cells in a spreadsheet and carries out operations using the data in those cells.
            We can include the following types of data in a formula:
§  constants or fixed numbers
§  Arithmetics operators: add, subtract, multiply, divide, percentage and raising a number to the power of another
§  logical operators
§  individual cells or cell ranges
§  functions.
EXCEL
            is the spreadsheet application in the Microsoft Office package in Windows.
            To make charts in Excel, all you have to do is follow the wizard´s instructions and choose the best options for your needs.
            The chart you make can be copied and pasted as an object that can be edited as a picture or as a linked object.
Key words
Grid
Set of squares made up of regularly spaced vertical and horizontal lines.
Package
Set of computer applications with differents uses but which are completely compatible with one another.
To paste
(computers) To insert text, graphics or other data into a document o file.
Budget
The amount of money you have avaliable to spend on something.

Talking points
In small groups, using a spreadsheet to help you, create a budget table for a school trip with your classmates.

Discuss the different options in terms of transport, duration of the trip, destination, type of accommodation and any other variables you think are important.

GRAPHIC EXPRESSION: Representation systems

In this unit you will find out how can objects be represented un perspective and what are the different types of perspective.

Go and enter the link

AXONOMETRIC PROJECTION

Discover the industry of marble and granite

Plastic

We must complete our textbook information about plastics with the following presentation:

https://docs.google.com/file/d/0B2PGDnml0WxfY3VGUTBFazU5Ulk/edit

Objetivos del área de tecnología y contenidos de la misma

Relación de objetivos y contenidos del Área de Tecnología 3º E.S.O. (bilingüe) para el curso 2014/2015 del Colegio Marista Nuestra Señora del Carmen de Badajoz

3º E.S.O.
OBJETIVOS DEL ÁREA DE TECNOLOGÍA:
1.- Abordar con autonomía y creatividad, individualmente y en grupo, problemas tecnológicos trabajando de manera ordenada y metódica para estudiar el problema, recopilar y seleccionar información procedente de distintas fuentes tanto en castellano como en inglés, elaborar documentación pertinente, concebir, diseñas, planificar y construir objetos o sistemas que resuelvan el problema estudiado y evaluar su idoneidad desde distintos puntos de vista.
2.- Disponer de destrezas técnicas y conocimientos suficientes para el análisis, intervención, diseño, elaboración y manipulación de forma segura y precisa de materiales, objetos y sistemas tecnológicos.
3.- Analizar los objetos y sistemas técnicos para comprender su funcionamiento, conocer sus elementos y las funciones que realizan, aprender la mejor forma de usarlos y controlarlos y entender las condiciones fundamentales que han intervenido en su diseño y construcción.
4.- Expresar y comunicar ideas y soluciones técnicas así como explorar su viabilidad y alcance utilizando los medios tecnológicos, recursos gráficos, la simbología y el vocabulario adecuados en lengua española e inglesa.
5.- Adoptar actitudes favorables a la resolución de problemas técnicos, desarrollando interés y curiosidad hacia la actividad tecnológica, analizando y valorando críticamente la investigación y el desarrollo tecnológico y su influencia en la sociedad, en el medio ambiente, en la salud y en el bienestar personal y colectivo. Analizar la situación tecnológica y el desarrollo industrial de Extremadura así como sus repercusiones económicas y sociales.
6.- Comprender las funciones de los componentes físicos de un ordenador así como su funcionamiento y forma de conectarlos. Manejar con soltura aplicaciones informáticas que permitan buscar, almacenar, organizar, manipular, recuperar y presentar información empleando de forma habitual las redes de comunicación en lengua española y lengua inglesa.
7.- Asumir de forma crítica y activa el avance y la aparición de nuevas tecnologías, incorporándolas al quehacer cotidiano.
8.- Actuar de forma dialogante, flexible y responsable en el trabajo en equipo, en la búsqueda de soluciones, en la toma de decisiones y en la ejecución de las tareas recomendadas con actitud de respeto, cooperación, tolerancia y solidaridad expresándose en ambas lenguas: castellano e inglés.
CONTENIDOS
UNIT TOPIC
1 THE TECHNOLOGICAL PROCESS
2 PLASTICS, STONE AND CERAMICS
3 GRAPHIC EXPRESSION: CAD AND REPRESENTATION SYSTEMS
4 USING COMPUTERS FOR OUR PROJECTS: SPREADSHEETS AND DATABASES
5 MECHANISMS
6 ELECTRICITY
7 ENERGY AND ITS TRANSFORMATIONS: ENVIRONMENTAL IMPACT
8 COMMUNICATION TECHNOLOGY: THE INTERNET