KS3 ~ Year 8 ~ Energy & Power

This lesson is designed for the KS3 Year 8 Science course, specifically the P2 1.2 unit on ‘Energy’.

More Biology, Chemistry and Physics resources can be found in my TES Shop: https://www.tes.com/teaching-resources/shop/SWiftScience

This lesson starts with a discussion on what power is a measurements of, there are hints that can be put on the board for lower ability students. You can then provide students with a definition of power which they can write down in their books.

Pupils then consider the units of power, they can copy and complete sentences on the board which compare watts to joules/second and the difference between watts and kilowatts, joules and kilo joules.

Next is the completion of a formula triangle in their books, higher ability students can figure out how to write this on their own but for lower ability students you may want to guide them through it. The concept of power is then put into context using Mo Farah/Usain Bolt as examples (videos provided).

The next task is a table that students will need to copy off the board, it outlines different appliances and pupils will have to perform calculations to fill in the blanks. Pupils can self-assess their work using red pens, answers are provided on the PowerPoint slide.

Next, students will complete a ‘copy and complete’ task, students will need to fill in the blanks to complete a paragraph which summarises everything that they have learned throughout the course of this lesson. The answers to this task can be self-assessed using the mark scheme provided.

The last part of the lesson focuses on electricity bill calculations, using the units kWh. Students will be shown a worked example of a calculation to demonstrate how much energy (in kWh and Joules) is used by a laptop over the course of one hour. Students will then compete a set of problems similar to this, they can self-assess their work using the mark scheme once this task is complete.

The plenary task requires students to write a Whatsapp message to a friend to summarise what they have learned this lesson.

All resources are included at the end of the presentation, thanks for looking, if you have any questions please let me know in the comments section and any feedback would be appreciated :)