I'm in the same boat as you. I have been teaching myself the D/H xQ method and all the other necessary formulas needed for IV calculations, and OUR teacher says we will be learning Dimensional Analysis instead. What a Joke
! I now understand DA, but I'm so much more comfortable with formulas!!!
I grew up with formulas. everymath class I have ever had has taught formulas! Seems to me there is a new era where nurse educators are heeding and conforming to the winds of change and the belief that if drug equations can be made into ONE HUGE GIGANTIC STEP that no student will leave anything out or get the calculation wrong! Personally I don't agree. I prefer the formula method myself. I think DA is being taught more often because it puts ANY conversions your may need to perform into the LOOOOOOOOOOOOOOONG equation!!
Me, I like formulas. I can remember to convert the values and stuff before I plug the data into a formula. I don't like DA because I never learned it for ANYTHING except this class!!! MUST BE A REALLY IMPORTANT WAY TO TEACH MATH , HUH?????
Anyway, I kinda see why the instructors are changing their instructions, but multiplication and division are still just multiplication and division. When I take the class, I will STILL use the formulas, because they are time-saving for me. I have trouble remembering why one number goes in one place and others go in other places. I need a reason to put some number on the bottom. (a reason that isn't to cancel out the next number.) That just seems like MUSICAL CHAIR MATH to me. I prefer formulas, and I am going to keep using them. I will convert my values before I use the formulas if necessary, but DA is just too much work to learn when the formula method works just as well.
We are using ANNA CURREN's Dimensional Analysis for Meds. as our text. I have bought the book early, and a book that teaches formula & DA& R/P methods also, and I still find the formula method easier. That;s what I'm stickin'to. I will take my class online this summer, and she can't mandate me to perform the calculations using one method over another, and she can't get problems that won't work only with the DA approach. I would recommend that you buy some different books that use all of the approaches and then get a Dimensional Analysis book and see if you can work the problems using both methods. I can, but formulas are just quicker for me. like painting something free handed vs using a stencil. The stencil is quicker, easier, and gets me the result I want. Just remember to perform your conversions before you begin your problems. Make sure your units agree, if not convert them and then plug in your values to the formula.
Most bilingual people can speak in 2 languages rather fluently, but most of them still revert to their mother tongue when at home because it was what the first learned, and the one they are the most comfortable using. The messages are still understood and effective, so what is the problem.
I'm bilingual, but Formulas are my first language, and the one I'm most comfortable using. And if my answers are the same as the DA method, she can't count off for it. We don't have to show our work, we just have have the right answer.