'Cross dues' diaporamas de présentation

Optical illusiions

Optical illusiions. By Summer may. Look at the cross dues the cross get bigger or smaller. Look at this and see what you can see. look at the circles now look at the black dot. Ster at the piccher for 30 secuns. does it move. Look at the blak dot !!!. Thank you for waching my pawerpont.

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