Now that we've all agreed that hexadecimals need to feature in lesson plans, if only to explain about ASCII, lets move on to a more controversial topic: dot notation.
I'm guessing practically all math teachers are suspicious of such alien notation as dog.bark() or dog.eat('biscuit'), where a noun is associated with its behaviors in a noun.verb(argument) pattern. Nouns (things) may also have static attributes or properties, which may be thought of as adjectives, e.g. dog.color or dog.weight.
We might get away with teaching some of this in grammar class, should grammar be offered at all in school X. By introducing a logical grammar, used daily by computer programmers around the world, one gets exposure to logic more generally. No older notation need be displaced. Dot notation is fairly universal and is used as a part of machine-executable logical languages.
For this reason alone, I advocate adding lesson plans regarding dot notation. If you don't have a computer, or electricity to feed one, that shouldn't stop you from partaking of the notation.
Again, if this all seems to alien, remember I sometimes write curriculum for a digital math track, beginning with some 3rd year high school math course, not anything at the primary level. However, with this turf established, it becomes easier to work forward and backward, looking for points of contact with the pre-existing curriculum. In any case, I'm supposed to pick topics relating to computer science and to what we've historically known as discrete math.
Lore about our various computer revolutions, breakthroughs in technology -- also part of the patter.
Note to Robert: you liked that Pythonic math text I cited, the 'Mathematics for the Digital Age' book **. Just found out that it's been re-released in updated form, this time with code in Python 3.x instead of 2.x. That's a major advance and I have an evaluation copy to start checking. I do tend to advise a 3.x flavor of Python, if just starting, with a few sidebars regarding the differences.
OK, that was pretty painless. Hexadecimals, dot notation... what could be next? I was thinking Regular Expressions why not? Small puzzles, fun applications, immediate relevance in such free tools as Google App Engine, where regular expressions serve on the front lines to switch incoming URL requests to their appropriate tracks.
We also want to do more statistics with our computer programs, like at least compute averages (at least to begin with). Lets save some room (this course is something of a sampler, until we can spread our wings more).