Monthly Archives: July 2013

Pluralizing Greek-Imported Nouns in Modern English

What’s the plural of octopus? Everybody I’ve asked recently (about ten native speakers in the last month) has replied with either “octopuses” or both  “octopuses” and “octopi.”  I must confess, I would have probably answered with “octopi,” if it weren’t … Continue reading

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Arithmetic and Geometric Sequences, Given Values of Two Terms

A common problem found in IB mathematics textbooks (all levels), is to describe a sequence (either arithmetic or geometric) from two term values in the sequence. e.g. Determine the nth-term equation of a sequence given that the seventh term is … Continue reading

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List of Endangered Irregular English Verbs

When I mentioned to a colleague of mine that I had planned to compile an endangered verbs list he beamed, “Great! We shall also set up a reserve just for them. But, I don’t think I could say the same … Continue reading

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Systems of Linear Functions and their Reciprocals

Recently, I’ve been exploring the relationship between systems of linear functions and their reciprocals, namely:

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