{source}

<?php 
require_once JPATH_SITE.'/TTcustom/TT_contentparser.php';
\(parameters = array("topicname" => "04waves_13light",
 "modelname" => "ejss_model_light_and_shadowwee02_s1_object_screen");

echo generateSimHTML(\)parameters, "EJSS");
?>
{/source}

Pre-requisites/ Prior Knowledge

 Pupils should be able/already known how to:

• Define what is meant by a light source.
• Give examples of light sources in their everyday lives.

Sample Learning Goals

At the end of the lesson, pupils will be able to:

• Determine how light travels.
• Draw the path of light from a light source to our eyes.

For Teachers

1. Recognise that an object can be seen when it reflects light or when it is a source of light.

2. Recognise that a shadow is formed when light is completely or partially blocked by an object

Hands-on

Teacher will guide the pupils through the next part of the experiment.

Each group will be given:-

1. a torchlight
2. blank white paper
3. measuring cylinder

Using the materials given and imagine that the torch is our primary light source, which is the Sun, investigate if the different position of the Sun in the sky at different times of the day have any effect on the shadow formed by an object.

What do you notice about the shadow as you move the torch following the path of the Sun?

Is the length of the shadow the same throughout the day?

Connected to Real Life

1. Long shadows are cast in the morning and evening when the sun is low in the sky.

2. Shadows are shortest at noon when the sun is directly overhead.

3. Shadows always point in the opposite direction from the sun.

Video

{source}
<iframe width="420" height="315" src="https://www.youtube.com/embed/KXdr1YwmNWc" frameborder="0" allowfullscreen></iframe>
{/source} Science - Light and Shadow - Basic - English by Bodhaguru

{source}
<iframe width="560" height="315" src="https://www.youtube.com/embed/FYftvseVzuI" frameborder="0" allowfullscreen></iframe>
{/source} Gruppe Pilobolus Amazing Shadow Dance by thaitd85 

Guiding Questions:

Show YouTube videos on shadow puppetry. Begin by investigating and asking the following questions: What is a shadow puppet? How are they put together? How do they move?  Where have you seen shadows? Can you make shadows creatures with your own hands? {source}
<a data-flickr-embed="true" data-header="true" data-footer="true" data-context="true" href="https://www.flickr.com/photos/seriykotik/7356718436/in/photostream/" title="Hand Shadows II"><img src="https://farm9.staticflickr.com/8006/7356718436_4469554708_z.jpg" width="423" height="640" alt="Hand Shadows II"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>
{/source}

Research

http://www.lajpe.org/dec15/08_1019_Bulbul.pdf
first study is published in LAJPE: http://www.lajpe.org/dec15/08_1019_Bulbul.pdf
Dr. M. Şahin BÜLBÜL
http://www.fizikli.com/editor

 Version:

1. http://weelookang.blogspot.sg/2013/08/light-and-shadow-model.html an initial draft simulation for research by This email address is being protected from spambots. You need JavaScript enabled to view it.
2. http://weelookang.blogspot.sg/2013/08/refraction-model.html an initial remix based on Andrew Duffy's work
   
3. http://www.compadre.org/osp/items/detail.cfm?ID=9983 an original simulation by Andrew Duffy
4. https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_light_and_shadowwee.jar my dropbox copy of simulation by Andrew duffy and lookang
5. http://iwant2study.org/lookangejss/04waves_13light/ejs/ejs_light_and_shadowwee.jar server copy of simulation by Andrew duffy and lookang

Other Resources

1. http://www.bbc.co.uk/schools/scienceclips/ages/7_8/light_shadows.shtmlby BBC
2. http://library.opal.moe.edu.sg/cos/o.x?c=/library/reslib&uid=&ptid=84&func=prop2&id=21991 by Loo Kang Wee with Ministry of Education 
3. http://www.facadedigital.com/ani_shadow18_2.swf Producer: Mr Wee Loo Kang. This Digital Resource was designed by Ms Emily Lee. (Anderson Primary School). http://www.facadedigital.com/Facade-Education_Science.html

end faq

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