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Basic Technology, Education, JS, Angles, Nigeria, Secondary School, LESSON NOTE, Mathematics

TECHNICAL DRAWING TERM 1 LESSON PLAN SS1

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This lesson plan contains carefully composed and typed materials for first term. The reference materials there-in can come very handy for research purposes. After payment,…

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Scheme of Work Senior Secondary Teachers' Tools Technical Drawing

SCHEME OF WORK FOR TECHNICAL DRAWING – SS3

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TERM 1: Freehand Drawing and Sketching (1) Freehand Drawing and Sketching (2) Engineering designs and working drawings (1) Engineering designs and working drawings (2) Engineering…

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Computer Studies (ICT) eBooks Mock Exam Question Bank Senior Secondary Teachers' Tools

QUESTION BANK FOR COMPUTER STUDIES (ICT) SS1-3

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(160 OBJECTIVE WITH 31 THEORY QUESTIONS) Which of the following functions does a computer not perform? (a) accept data (b) process data (c) accept information …

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Basic Technology eBooks Junior Secondary Lesson Plan Wood Work

Basic Technology Lesson Plans JS 1 Complete Volume

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File size: 1.2MB This lesson plan contains carefully composed and typed materials for first, second and third terms. The reference materials there-in can come very…

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Basic Technology eBooks Junior Secondary Lesson Plan

Basic Technology Lesson Plans JS 2 Complete Volume

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File size: 761kb This lesson plan contains carefully composed and typed materials for first, second and third terms. The reference materials there-in can come very…

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Basic Technology eBooks Junior Secondary Lesson Notes

NOTES ON BASIC TECHNOLOGY JS1 (Revised)

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File size: 4.5MB This note contains scheme of work, exercises, home work, as well as appropriate instructional materials/diagrams. The note is broken into weeks and…

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Basic Technology Junior Secondary Lesson Notes Technical College

Mechanical Transmission System: Friction, Definition, Causes and Laws. (Basic Technology Note)

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When one object rubs and grates another, it causes friction. Friction can be defined as a force that resists the relative motion of solid surfaces, fluid layers…

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Basic Technology Junior Secondary Lesson Notes Senior Secondary Technical College

BASIC TECHNOLOGY LESSON NOTE: Mechanical Transmission System – Drive Mechanism (gears and chain drive)

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Drive Mechanism A drive mechanism is one that takes the power coming from a motor without any reduction. Gears, chains and belts are used to transmit energies. Gears Gears…

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Air in motion is known as wind. Air moves from areas of higher pressure to areas of lower pressure. However, very high speed winds cause great damage. Air in motion is can be used to transmit energy. Likewise, gases and liquids under pressure are used to transmit energy over long distances. Pneumatics is the application of pressurized gas and liquids to produce mechanical motion. Hydraulics is the application of pressurized liquid to produce mechanical motion. Effects of air motion around objects Every object moving in the air, such as airplanes, birds and kites, has two vertical forces and two horizontal forces acting on it. As shown above, birds and aeroplanes have air moving against then, but they are designed to use that air pressure to their advantages. Let's see the forces acting on any airborne object or bird while in motion. Effects of air motion around objects · The vertical force acting downward is the weight of the object. · The other, which acts upwards, is called the lift. For lift to be produced, the velocity of air below the object must be higher than the velocity of the air above. Lift is developed when air flows round the airborne object shaped like an aerofoil. · The horizontal force which pushes the object forward is called the thrust, and · The other which pushes the object backwards is the drag. Drag tends to slow down a moving object. This force is produced by the action of air on the surface of the object. Note: both lift and drag are effective when air moves round an object. Streamlined body of objects makes it possible for air pressure on their bottom surface to be greater than the one on top. Pneumatics Gases and liquids under pressure are good mediums when transmitting energy over a long distance. Hydraulic systems are also categorized under pneumatic systems. Examples of hydraulic and pneumatic devices 1. Pumps: these are used to move gases and liquids by applying pressure greater than those of the gases or liquids. For instance, bicycle pump moves air through the pump into the tyre tubes. 2. Centrifugalpump: this has a set of moving vanes which receive the fluid (air or water) at a smaller radius. The moving vanes increase the speed of the fluid. At a larger radius, the fluid enters a row of stationary vanes. These reduce the speed of the fluid, so that the fluid pressure rises. The fluid is then discharged at high pressure. 3. Hydraulic jack: this moves the liquid into a high pressure compartment. The piston is equipped to carry heavy loads such as cars. Machines like forklifts, cranes and even trailers make use of hydraulics to function effectively. 4. Garden sprinkler: this consists of one or more water jets which can revolve about the centre as it sprinkles water in a lawn or garden. Class activity: Making a kite Use paper to form the body of your kite. If you must, tape four pieces of paper together. But you have to tape them together the right way! Tape the two on top together, then tape together the two on bottom. Tape them on each other, making sure they're secure. Use paper to form the body of your kite. If you must, tape four pieces of paper together. But you have to tape them together the right way! Tape the two on top together, then tape together the two on bottom. Tape them on each other, making sure they're secure. Tie two sticks together. To make sure they're in the right spot, line them up with your paper first. Tie as tight as possible! It should be securely knotted and the excess string cut off. Any string that will keep it in place will do the job. As long as it doesn't come undone and isn't rope (rope is bulky), you're golden. Wooden BBQ Skewers work well for sticks. Pierce 4 holes in the diamond-shaped paper at each corner. Thread a string through each hole and around each pipe cleaner or stick. Leave a bit extra on the top to thread a ribbon on, if desired later. Knot the stick in place to the kite itself. Tie a string to the right and left hand sides of the horizontal stick. Then tie the string to the center of that string for your flying line. This string needs to be as long as you need to be for flying! Tie on paper or ribbon to the corners to form the tail. You can add small strips of material to the end of the kite for added buoyancy and weighting. It also looks more complete. Find a breeze or some light wind. Ask someone to help you hold your kite as you wait for a moderate wind to come. The wind should be blowing toward you, not from behind. When you sense a breeze coming, start running and throw it up into the air! With luck, it'll stay airborne. Fly your kite. It's so much more gratifying when you make it all yourself, isn't it? Once you get bored with simple flight, start doing twists, turns, and dives. And if your kite isn't perfect...you may want to be prepared for repairs and bring tape with you. (Special credits to http://www.wikihow.com/Make-a-Kite) Exercises: 1. What is wind? 2. What do you understand by the term pneumatic? 3. Define hydraulic? 4. What are the forces acting on an object moving in the air? 5. What are the differences between lift and drag forces? 6. What are three examples of pneumatic and hydraulic devices? Research: 1. What is an electric circuit? 2. What is a circuit diagram? 3. What is the difference between series and parallel electric circuits? (Credits: en.wikipedia.org, www.ency123.com, en.wikipedia.org, http://www.wikihow.com, uncyclopedia.wikia.com)xpinomoney, xpino money, VTU, Airtime, Data and Bills Payments, reseller portal, vendor, mtn, glo, airtel, 9mobile, nigeria, precious ikpoza, best data and vtu, cheap

Basic Technology Junior Secondary Lesson Notes Technical College

BASIC TECHNOLOGY LESSON NOTE: Mechanical Transmission System – Air Flow

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Air in motion is known as wind. Air moves from areas of higher pressure to areas of lower pressure. However, very high speed winds cause great…

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Basic Technology Eletrical Installation and Maintenance Work Junior Secondary Lesson Notes Senior Secondary Technical College

BASIC TECHNOLOGY LESSON NOTE: Simple Electrical Wiring – Schematic Diagram

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An electric circuit is an arrangement of conductors for the purpose of carrying current. However, before electric current can flow in a circuit, two conditions…

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