Tutoring biology 12, you cover the circulatory system.  The tutor mentions a specific issue about it. The number one reason for the circulatory system is transport of oxygen to the cells and carbon dioxide away from them.  This is done …

Biology: oxygen and carbon dioxide transfer through the blood Read more »

Tagged with: , , ,

Tutoring math, a likely destination of some of your students is computer science. The tutor continues coverage of the Perl language, which seems flush with simple solutions to programming problems….   In yesterday’s post, which was about Perl subroutines, I …

Perl: decimal formatting using printf and sprintf Read more »

Tagged with: , , ,

Since 2008, the tutor has listened for economic news.  While it doesn’t often arise in tutoring, economic performance is important across to the board. In 2008, the US gross public debt, which I’d just call “government debt”, was around 64.8% …

US compared to Eurozone: some initial figures, 2014 – 2016 Read more »

Tagged with:

Following up from the previous post, the tutor tries out the standard deviation estimator range/6.  Standard deviation is a common topic during high school math tutoring. Imagine the following results from a fictional midterm: 56, 42, 71, 66, 45, 81, …

Statistics: standard deviation comparison: formal vs range/6 Read more »

Tagged with:

Tutoring statistics, I’m happy to add this method to my repertoire.  The tutor brings forth a shortcut for finding the standard deviation. According to my source listed below, the standard deviation (σ) can be estimated as follows: σ=range/6 The range …

Statistics: an easy estimate of the standard deviation Read more »

Tagged with: , ,