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The compiler currently calls templates "class types", for example when you are told you can only inherit from a class type. But a trait is also a "class type". I think the rule is clearer when types aren't even mentioned: simply put, a template can inherit from another template.
http://scala.zone has a whole section on templates, and a different section on types. So far, it hasn't been too much of a problem deciding which of the two sections each lesson belongs in.
Is this about interface versus implementation inheritance? Sounds like it 
but you might consider that if this is confusing for your Twitter audience, when explained in 4 tweets, beginners might not stand a chance.pic.twitter.com/eEHn1DlHvT
Yes, I go into more detail here: https://scala.zone/courses/scala-beginner/types/basics … though that focuses less on my point that existing pedagogy seems to gloss over subtle differences between types and templates, and more on just explaining it more clearly from the outset.
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