Strain Energy

The main presentation is a PowerPoint with animated sequences using a crossbow to show how strain energy is calculated

Support Material
Readme (instructions for whole lesson)
Learning Outcomes (PowerPoint)
Starter Activity (PowerPoint and Worksheet)
Main Activity (PowerPoint with worksheets and answer sheets)
Lesson Notes (hand-out)
Plenary Activity (PowerPoint and worksheet)

It is intended for all science teachers but particularly those who are not physics specialists. It is, primarily, aimed at over 16 year old pupils but could also be used for younger pupils. Normally, the activities would fill a 45 to 60 minute lesson.

If you buy this resource, please print the Readme document as it contains the instructions and details of the files included.

Learning Outcomes
The learning outcomes are based on Bloom’s taxonomy of hierarchical classification: knowledge, comprehension, application, analysis, synthesis and evaluation. The lesson title and learning outcomes are:

How do crossbows work?
Learning Outcomes
Comprehension
To state the relationship between:

• energy, force and extension
• force, the spring constant and extension
• energy, the spring constant and extension
  Analysis
• to calculate the strain energy stored in a stretched object

Differentiation
The activities have varying degrees of differentiation; please refer to the Readme document.