General Info
This educational practice concerns the construction of an induction generator through the use of Breadboard. The construction will be demonstrated to educators/students. Afterwards, children/educators will construct their own generator and will experiment with this developing problem-solving skills, collaboration and creative thinking.The project is a part of a series of projects that have received so far 60 International awards and for these projects I was selected among the best teachers in the world with the Global Teacher Prize 2019 (Varkey Foundation) and Global Teacher Award 2020 (AKS Awards).
Audience and Educational Framework
Educational Details
This interdisciplinary project highlights the connection between magnetism and electrical energy and is designed with the help of a colleague, Christos Kotampitsis, Electronics Engineer. The problem that learners need to solve is the construction of an induction generator. During this educational practice, after the discussion on the function of breadboard, I will demonstrate to students/educators how a generator is built with the use of Breadboard. Teachers will act as facilitators because the project is student-centered. It is a S.T.E.M. project focusing on inquiry and student-led investigations through a real-life problem and hands-on activity empowering students to become ″out-of-the-box″ thinkers and creators. By implementing STEM through projects in education, students acquire critical thinking skills, they are involved in the process of solving authentic problems and learn to collaborate in teamwork.
-Familiarization with most important concepts of physics related to induction generator.
-Acquisition of practical skills that will help students build their own generators.
-Understanding of the parts of the generator and their role in the device.
-Learning of basic information about the history of the generator.
-Understanding of the important role that the electrical generator played in the human history.
-Development of general skills including collaboration, communication, creativity, problem-solving and presentation.
Two motors, rubber belt, LED lights, resistor, jumper cables
Breadboard, clamps, thick cardboard
Hot glue gun, 12V power supply
Implementation
(where and how the practice was implemented)
This interdisciplinary project highlights the connection between magnetism and electrical energy and is designed with the help of a colleague, Christos Kotampitsis, Electronics Engineer. The problem that students need to solve is the construction of an induction generator that is used for producing energy. As an introduction, there will be a brief reference to the history of this invention. Teachers will act as facilitators because the project is student-centered. We will discuss about the significance of the generator in human life since it contributed to the upgrade of the standard of living.
During this educational practice, after the discussion on the function of breadboard, I will demonstrate to students how a generator is built with the use of Breadboard. The generator consists of two parts: a stationary part called the stator in which the magnets can be found and a moving part known as the rotor which contains the coils. The generator function display circuitry consists of three LED indicator lights and a current limiting resistor which protects the LED lights. The kinetic energy will be given to the generator by a DC motor. The motion will be transmitted through a rubber belt. It will be explained to students that the induction generator can take kinetic energy from renewable and non-renewable energy sources. After the demonstration, children will build their own generators. Moreover, a digital multimeter will be used in order for students to understand the concept of measurements in physics.
Emphasis will be placed on collaboration and problem-solving and creative skills as well as acquiring profound knowledge and basic, practical skills at the same time within the limits of the age groups. It is adjusted to the cognitive level of different age groups. The instructions are so simple and easy to follow that children can easily make a generator without a lot of help in their own homes. Everything is so well- organized-there is even a tutorial- that is transferable.
This project is suitable for continuous professional development seminars for teachers in primary and secondary education. It is applicable in primary and secondary education in many cognitive disciplines.
Students will construct their own generators and through this process teachers will evaluate learning outcomes. The learning outcomes include familiarization with most important concepts of physics related to induction generator, acquiring practical skills that will help students build their own generators, understanding the parts of the generator and their role in the device. Furthermore, children will learn basic information about the history of the generator and they will understand the important role that the electrical generator played in the human history. Children will have the opportunity to develop general skills including collaboration, communication, creativity, problem-solving and presentation.
Educational material/resources (file/URL) accompanying the practice
English
Greek
An induction motor or generator is a machine that converts kinetic energy into electrical, thanks to the induction phenomenon which is the production of electric current at the edges of a coil being rotated within a magnetic field.
A breadboard is a unit used for building temporary circuits (prototypes) without using a soldering iron. Prototyping is the process of testing an idea by creating a rudimentary model of a circuit.
When a component is placed in a hole, it is electrically connected to everything else placed on the same terminal strip. This is due to the conductive metallic lines which allow the current to flow through them. Each metallic terminal strip has only 5 clips. This applies to every breadboard. This means that you can connect up to 5 components on each terminal strip.
However, there are 10 holes on each row, but these are separated by a groove in the middle of the breadboard. This groove (the central divider) separates and isolates the 2 terminal strips of each row. This groove allows us to connect integrated circuits to the breadboard with each end of the integrated circuit placed on a separate terminal strip with 5 connection holes.
-Applying hot glue in order to glue the motors on the cardboard
-Gluing the two motors on the cardboard with hot glue
-Connecting the two motors with the belt
-The motion transmission system is complete
-Designing the circuit
-Preparing the components needed to assemble the circuit on the breadboard
-Assembling the circuit on the breadboard
-The circuit assembly on the breadboard is complete
-Connecting the first motor to the second via the rubber belt, in order to transmit motion
-A digital multimeter will be connected in order to check the voltage produced by the second motor
-The two motors – connected by the belt - in motion
-Checking the produced voltage using a digital multimeter
-The build is ready to be tested
-The build is ready to operate
-Supplying the produced voltage to the circuit
-The produced voltage illuminates the LEDs