Should circuit building kits be unavailable, locate an appropriate online circuit building simulator to use in the lesson.
This lesson contains a link to an external video. Please watch the video prior to presenting this lesson to ensure that the content is appropriate for your students.
Watch The Power of Circuits video on YouTube. Afterwards, revise the key concepts of the video and allow the students to ask clarifying questions if needed.
Introduce the statement to be investigated in the lesson: Circuits need to be complete (closed) to allow the flow of electricity.
Display and discuss slides 8-9 the It’s Electric! PowerPoint. On slide 9, point out the components in the top diagram. Highlight how each component is represented on the corresponding circuit diagram.
Display the Circuit Diagram Symbols Poster and examine each symbol. Model how to draw a circuit diagram using a selection of the components. Discuss whether electricity would flow through the circuit. Repeat this activity several times, giving some examples of circuit diagrams where electricity would not flow.
Distribute the Circuit Diagrams Worksheet to the students. Read through the questions on the worksheet as a class and check that the students understand the task.
Monitor and support the students as they complete the activities. Optional: To answer Question 3, students could predict a result on the worksheet, then use circuit construction kits or an online circuit simulator to perform the test.
Once the students have finished, encourage the students to share their answers. Draw particular attention to Question 3, discussing the reasons why the bulb would or would not illuminate.
Collect the students’ worksheets. These could be included in a portfolio of work samples and used to assess the students’ understanding of the unit objectives.