Then it takes a tremendous amount of time, particularly in mathematics, to edit the whole book. Every mathML equation and every question needs to be examined and the questions solved independently of the solution to ensure they are accurate.

Then, finally if you are publishing in XML you need to have a technical person go through the document to ensure that it is valid, well-formed and will render properly.

One math concept would take, on average 0.5 days of effort for a team of 5 people (2 writers, 1 graphic artist, 1 editor and 1 technical XML person). An average math course in the US is 1/5th of 180 days of instruction which equals about 216 instructional hours. A math textbook will have about 100 concepts to present in those 216 hours which means it will take 5 people 50 days (almost 3 months) to write a single text book.

A handful of teachers cannot possibly write a high quality, curriculum aligned and comprehensive resource in a weekend. It just is not possible.

]]>Chapter 17, end of first paragraph via translate.google.com: “Functions can also easily draw

graphic calculators on the computer or the software (for example Wolfram Alpha).”

Based on PDF GlyphGryph mentions, http://cloud.github.com/downloads/linjaaho/oppikirjamaraton-maa1/current_draft.pdf ]]>

That said, hopefully they’ll keep pushing and get to a useful point.

]]>The download is in pdf format.

]]>Mind though that the material is in Finnish (as it is written by teachers from Finland). ]]>