Learning objects Optics and refraction: focal point

TLF ID L1478

Look at light rays magnified by a lens. Notice how light converges after it leaves the lens. Examine how curvature and thickness of a lens affect focal length. This learning object is one in a series of three objects. The series is also packaged as a combined learning object.



Educational details

Key learning objectives
  • Students identify that light rays change direction when they pass through a lens.
  • Students demonstrate that the focal length of a lens is related to the curvature of its surfaces.
Educational value
  • Students investigate refraction and lenses by engaging with a simulation showing refraction of light rays by a lens.
  • Students adjust the thickness and curvature of a lens to observe the focal length.
  • Students choose between two hypotheses.
  • The simulation is accessible for further investigation after feedback has been given.
Year level

9

Learning area
  • science
Strand
  • Science/Physical sciences
  • Science/Science understanding
    Concept
    • Science/Light
    • Science/Refraction
    Skill
    • Analysis;
    • Application;
    • Comprehension;
    • Knowledge
    Student activity
    • Interactives;
    • Experiment;
    • Analysis;
    • Modelling
    Learning design
    • Experiential learning;
    • Independent learning;
    • Problem solving;
    • Visual learning

    Other details

    Contributors
    • Script writer
    • Name: Erica Dale
    • Organisation: Tungaroo Software
    • Address: Sydney NSW Australia
    • Subject matter expert
    • Name: Graham Coghill
    • Address: Marcus Beach QLD Australia
    • Technical implementer
    • Publisher
    • Date of contribution: 20 Sep 2013
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    Access profile
    • Colour independence
    • Device independence
    • Hearing independence
    Learning resource type
    • Interactive Resource
    Browsers
    • Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
    • Firefox - minimum version: (MS-Windows)
    • Safari - minimum version: 5.1 (MacOS)
    Operating systems
    • MacOS - minimum version: 10.6
    • MS-Windows - minimum version: XP - maximum version: 7
    Rights
    • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.