_cc781905-5cde-3194 -bb3b-136bad5cf58d_           _cc781905 -5cde-3194-bb3b-136bad5cf58d_         _cc781905-5cde-3194- bb3b-136bad5cf58d_           _cc781905- 5cde-3194-bb3b-136bad5cf58d_     _cc781905-5cde-3194-bb3b- 136bad5cf58d_           _cc781905-5cde- 3194-bb3b-136bad5cf58d_                     _cc781905-5cde-3194 -bb3b-136bad5cf58d_           _cc781905 -5cde-3194-bb3b-136bad5cf58d_     _cc781905-5 cde-3194-bb3b-136bad5cf58d_ => eyes

Why do we have eyes?

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Small experiment in groups of 2 - material: a pen and its cap per group

A pupil hides one eye and holds his pen.  In front of him, a comrade holds the cap. This is to place the cap on the pen.

      => We need both eyes to see the relief (binocular vision)

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kim game 

• Select 5 objects that are part of the students' experience (a book, a bottle, a pencil, a glove, a dice)

describe and identify the objects then remove, add an object without the knowledge of the pupils (cover with a towel for example)​

• Same exercise with more similar objects (brush, marker, pencil, crayon, pen)

• Same exercise with identical objects but of different colors (colored pencils)

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observation game

• Distribute 3 then 5 objects in the class - Get a student out - the others must tell him orally (without naming the object) using a precise vocabulary the place of the object removed from the decor in his absence

• With a card game (7 families) - observe a card chosen by a student, put it back in the game, find the card

• All kinds of visual discrimination cards

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Cooperative course:

one student is blindfolded, the other guides him by voice 

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Viewing angles

Discover that an object can appear very differently depending on the angle from which you look at it

Use specific vocabulary: front/front view, side view, back view, top view, bottom view, side view...

 

Propose different views of an object (drawings or photos):

Start with the least easy then gradually display the other views by moving towards the most obvious.

(If a student finds the name of the object, he comes to whisper it in the ear of the teacher)

When the object is revealed, ask the students who quickly found the clues that allowed them to identify the object.

And finally, find out where, in relation to the object,   was the photographer according to the view displayed (you can use the real object to facilitate understanding).

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visual illusions

Refine visual perception - interpret an image - develop critical thinking - (we can make an image lie)

• Files:what do you see, a vase, two faces? which round is bigger? which line is the longest?

how to check: measure? use a layer? a template ?....

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• Experience: on cardboard draw a fish on one side, an aquarium on the other. Place rubber bands on each side of the cardboard, roll up then pull to rotate...

          _cc781905-5cde-3194 -bb3b-136bad5cf58d_        => le mouvement superpose les 2 dessins ce qui gives the illusion that the fish is in the aquarium

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• Chinese shadows: 

With the shadow of a head and the shadow of a hand, you can get the 2 shadows touched even though the head and the hand do not actually touch each other.

You can also make the shadow of an object grow by moving it forward or backward while the size of the object does not change.

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• With a partially hidden image

Propose an image reading by revealing it gradually - make assumptions => point out that we can be wrong if we do not have all the information.

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Warning ! our senses can deceive us, we do not always perceive reality - we must be vigilant!

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Extension :Plastic compositions

• the trompe-l'oeil: Visit of the St Gaudérique church for its trompe-l'oeil wall, urban wall

• the anamorphoses : the duck-rabbit (see wikipedia) - the vase-face (see file)- William Hogarth - MC Escher

• the hidden patterns: Dali 

• Arcimboldo: creating faces with fruits and vegetables