Search This Blog

Tuesday, December 23, 2008

Eleven Plus Non Verbal Aids

At last some relief for parents and children engaged in struggling with certain types of non verbal reasoning questions.

We need to go back to Leonardo Da Vinci who listed the devices known to painters to show how far away objects are – called depth or distance. He commented on `Linear Perspective’ – where lines converge in the distance. He also talked about `Ariel Perspective’ where distant objects appear to be more hazy and blurred than near ones.

He noted that our two eye vision enables us to see behind a certain object – but did not understand that each eye receives a different image. (This is the reason why you will sometimes see one of the members of the family closing an eye when looking at an image.)

Back in 1838 a British physicist called Charles Whetstone invented an apparatus that he called a `stereoscope’. He used mirrors to present slightly different pictures to the right and the left eye. The pictures could be adjusted to give an impression of depth. (This is a bit like grand dad putting his glasses on when he is involved in helping to solve eleven plus problems.)

Buoyed by this information, the vast army of `Eleven Plus’ experts will soon be delivering their new non verbal reasoning books – along with custom made stereoscopes. We can see the emergence of new advertisements:

“The New Non Verbal Reasoning Book.

All new visual questions.

Your very own stereoscope.

Eye patches supplied as optional extras.

The Must Have Non Verbal Tool of 2009.

Remember you read it here first!"

By the way you can make your own home made stereoscope by using the time honoured Blue Peter props – two empty toilet rolls taped together. More affluent parents may prefer to use their opera glasses.

We can just see children walking into their lessons in the New Year. The tools of their trade will be attached to their heads. Some will be wearing diamond encrusted opera glasses while others eye patches made from the softest man made material. The more intelligent parents will simply have supplied a pair of grand father’s glasses. If your eleven plus child wears these glasses – any non verbal reasoning question would look a little hazy.

1 comment:

Neofelis Borealis said...

Hello. I just posted my homemade stereoscope instructions and welcome comments. Where can I see the one you refer to?