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50 Optical Illusions (Usborne Activity Cards) Cards – 30 Oct 2009
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'You can always rely on Usborne to come up with ideas for entertaining children and their packs of Usborne Activity glossy wipe-clean cards...are a brilliant idea' - Newbury Weekly News
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Top customer reviews
Some cards demonstrate that you cannot trust what your eyes are seeing! For example, two colours in a picture appear different but are in fact the same, or apparently over-lapping circles are not really overlapping at all. A 'revealer card' is included, which features a ruler edge and two holes to view colours through seperately, to prove certain illusions are true!
There are 50 illusion cards, approx 15.5cm long, boldly coloured and with explanations of the illusions on the reverse of each card. Not every card is mind-blowing but there is a decent variety and overall this set makes up an interesting collection. Ideal for dipping in and out of, for travel and for showing friends.
That said, the kids liked them. Bought one set for mine and another as a gift. Bit fiddly having to keep shoving them back in the box without creasing them. Might look for a book next time!
A great selection of optical illusions with full explanations as to how they work. Perfect for your little scientist!
This was bought for a Granddaughters part Birthday gift.
We have all had a go at the cards. they are a big hit.
Some are better than others,but that's ok.
They are a good size for little hands
Small enough for days out to pop into a handbag ect.
Not a bad price overall. Free delivery with amazon prime so can't complain.
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