I was in #Statschat last Thursday and we were discussing the usage of technology to simplify Statistics calculations and when it is appropriate to still make the students go through the motions of learning methods which might not be the best ways to find solutions given the complexity of some of the calculations.
The conversation started over discussing whether or not students still needed to learn the Empirical Rule, or how to use Normal Distribution tables or find standard deviation with the traditional equation.
I show my students the equation, we talk about what each of the variables
What I have my students do is use a table which seems to simplify the process.
We complete the table just to find the sum of "deviation squared" and then use that number in the equation below.
The first one we do together, then I throw another one at them to work on and then compare with their partners.