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Learning objects Light and reflection: light rays

TLF ID L2041

Investigate whether light rays always travel in straight lines. Rotate circular walls, each of which has a single opening. Position the walls so that light from a central bulb can be seen by a person outside the walls. Make shadows by placing a range of objects between a light source and a screen. Position shapes to make a shadow animal. Notice that shadows are larger when more light is blocked. This learning object is a combination of two objects in a series of six objects.



Educational details

Key learning objectives
  • Students relate the size of a shadow to the proximity of an object to a light source.
  • Students combine simple shapes to cast a shadow having a complex shape.
  • Students observe that light travels in straight lines.
  • Students observe that light is blocked by solid objects such as an opaque wall.
Educational value
  • Illustrates that light always travels in a straight line and is blocked by solid objects.
  • Illustrates the size and shape of shadows formed when light is partially blocked.
  • Simulates shadows cast by a range of shapes at different distances.
  • Provides more than one visual perspective for light experiments.
  • Includes a series of tasks that progressively increase in difficulty.
Year level

5

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

    Other details

    Contributors
    • Script writer
    • Name: Roger Dickinson
    • Organisation: The University of Western Australia; The Centre for Learning Technology
    • Address: Nedlands WA 6907 Australia
    • URL: http://www.clt.uwa.edu.au/
    • Subject matter expert
    • Name: Roger Dickinson
    • Organisation: The University of Western Australia; The Centre for Learning Technology
    • Address: Nedlands WA 6907 Australia
    • URL: http://www.clt.uwa.edu.au/
    • Technical implementer
    • Organisation: The University of Western Australia; The Centre for Learning Technology
    • Address: Melbourne WA 6907 Australia
    • URL: http://www.clt.uwa.edu.au/
    • Publisher
    • Date of contribution: 28 Jan 2014
    • 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.