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+---
+title: 'new course : beyond'
+published: true
+routable: true
+visible: false
+---
+
+! *YOUR  CHALLENGE*  :  Your image in a mirror.
+! 
+!  ![](objet_image_defi_v2_300.jpg)
+!
+! We all have the opportunity to look at ourselves in a mirror. We see our own image. But perhaps it is interesting to take the time of interrogative observation, and then to test yourself.
+!
+! _Do not look at the answer, take time to think, a few days if necessary. The time to build your mental representation of the phenomenon, to formulate it in words is important, a thousand times more important than the ephemeral instant where you read the fews words of the solution._
+!
+! <details markdown=1>
+! <summary>
+! I choose.
+! </summary>
+! * Is my image simply located in my mind, or has it a location somewhere in space?
+! * If my image is localized, what is its position?
+! * If my image has a position, does it have a size? Is she taller or smaller than me?
+! * If my image has a position, and as it is made of light, can it illuminate a screen?
+! * If I retreat a little from the mirror, I see my image decreasing slightly. Why? Is the size of my image really smaller? Or does it keep its size and I'm the one who sees it smaller?
+! * Can I imagine to see more or less tall an image that has a well-defined size?
+!
+! These questions that I ask myself about my image, I have to ask them about an real object that I see in front of me.
+! <details markdown=1>
+! <summary>
+! ANSWER
+! </summary>
+! To write.
+! </details>
+! </summary>
+
+
+!!!! *DIFFICULT POINT* (contribute, or indicate a difficult point of understanding)
+!!!!
+
+!! *BEYOND* (to contribute)
+!!
+
+!! *CULTURAL POINT* (contributor)
+!!
+
+!!! *DO  YOU  MASTER ?*
+!!! <details markdown=1>
+!!! <Summary>
+!!! Describe the test
+!!! </summary>
+!!! The text of the test (and its images, figures, audio, video, etc ...)
+!!!
+!!! Question text
+!!! <details markdown=1>
+!!! <summary>
+!!! Answer choice 1
+!!! </summary>
+!!! Text if this answer 1 is chosen
+!!! </details>
+!!! <details markdown=1>
+!!! <summary>
+!!! Answer choice 2
+!!! </summary>
+!!! Text if this answer 2 is chosen
+!!! </details>
+!!! <!--possibility to add answers, questions-->
+!!! -----
+!!! <details markdown=1>
+!!! <summary>
+!!! Complete solution.
+!!! </summary>
+!!! text of the solution
+!!! </details>