  The tree ammeter method and the three voltmeter method are used for
measurements of power. More specifically, they are used to calculate the power
factor of a specific load. Both methods are used on the Fundamentals of
electrical engineering course in professional study of electrical engineering
at the Zagreb University of Applied Sciences as an introduction to measurements
of power and phasor arithmetic. Both methods are susceptible to accuracy
problems caused by small errors in measuring devices. These accuracy problems
in specific scenarios that were used during the course presented an opportunity
to educate students on the difference of theory and its practical application.
This paper examines our solution to the perceived accuracy problems and
discusses the changes that were made in course material and teaching methods to
highlight the difference between theory and practice.
