Year 9 Circuit Construction Kit and Ohms law
We have been learning about series and parallel circuits this week and how electricity flows through circuits. One thing we have not been accounting for yet though, is resistance!
Luckily for all of us, there as an easy way to measure the resistance in a wire or electrical appliance called, “Ohms Law” which measures resistance in “Ohms” (Ω).
To begin, watch this introductory video which explains what Ohms are and how they are measured.
Great, now that we have been introduced to Ohms law, lets further develop our understanding. Rather than trying to measure this in the real world which can cause electrical injury and has a large margin of error, we’re going to use a simulation:
Within the application design several circuits and record screenshots for the following:
- Series and Parallel
- Extra batteries or Bulbs
- Changing the resistance
With the different circuits that you make, use the Voltmeter and Amp-meter to determine the resistance in the circuit and demonstrate “V=IR”.
Once you have finished experimenting with your circuit drawings, next you must try to make your own introductory video utilising a screen grabbing software or recording the footage on your phone with a friend. This video will be shared within the GC page. It must not exceed 2min in length and demonstrate your knowledge and understanding of Ohms law.
|Learning Area and Stage: Stage 5 Science, SC5-10PW|
|Content Area: Electricity PW3-a,b
Scientific understanding of current electricity has resulted in technological developments designed to improve the efficiency in generation and use of electricity.
|Lesson Learning Outcome: Students will demonstrate an understanding of the relationship between Voltage, Current and Resistance (Ohms Law)|
|Content||Pedagogy||Technology||Pedagogical Content Knowledge||Pedagogical Technological Knowledge||Content Technological Knowledge|
|Students describe qualitatively the relationship between voltage, resistance and current||Utilising constructivist learning theory, students will learn the theory and practice in simulated lab||Video demo of how Ohms law works. Students create circuits and visualise electron flow||Students build on electricity foundations to develop understanding of V=IR relationship||The lesson is transformed through application of simulated lab as visual learners can see electron flow||The content can be taught remotely, as students view the content and apply it in the simulation|
|Ethical Considerations: Phet simulations and Khan Academy are free to use, however, they do ask for donations for those that can afford it. The task will have students visible in the recordings, for this reason they cannot be shared externally without parental consent.|