Optical illusion: Can you locate the hidden sunglasses in this classroom?

The illustration depicts a common classroom setting. There are desks, chairs, a blackboard, and numerous school equipment spread throughout.  

At first sight, everything appears normal. A paper plane flying across the room is easy to detect, but there's more to it than that.  

The true challenge is to locate a pair of sunglasses artfully disguised within the image.  

Begin in one area of the image, such as the top left, then scan across row by row. This strategy ensures that you cover all aspect of the photo.  

Look for forms or patterns that appear out of place. Sunglasses have a distinctive shape that may not integrate well with classroom materials.  

Select an object in the photograph, such as a desk or chair, then investigate what is around it. Sometimes the hidden thing is visible but ingeniously disguised as another object.  

Still trying to find the sunglasses? Do not worry! This is all part of the pleasure. Even the most astute eyes can be fooled by the concealed pieces in an optical illusion.   

Take a big breath and give it another go. If you're truly puzzled, check out the solution image at the bottom to see where the elusive sunglasses are hidden.  

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