"When people play with LEGO(R) bricks, they do not encounter error messages.
Parts stick together only in certain ways, and it is easier to get things right
than wrong. The brick shapes suggest what is possible, and experimentation
and experience teaches what works."
[ACM Transactions on Computing Education, Vol. 10, No. 4, Article 16, Pub. date: November 2010.]
Could we ever see such a way of working in most schools ?
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