Very low brow
really?
Which story did you think would date quickly?
First story is about 'the thing from the black planet' visiting Earth.
Fourth story is Six Magic Tricks kids can do.
Fifth story is a diary written from the point of view of a dog.
I think they're all very appropriate for the age range. And I don't see at all how they date.
It's very hard to find easy texts for older kids which aren't patronising. The anthologies are brilliant.