# Top 5 Most Popular Posts of April

It's that time of month again - time for a recap of my top 5 most popular posts of April!  Once again, the top 5 are dominated by several of the usual favourites.  However, spot number 5 is a newcomer!  I'm happy to see that I have several pieces of content that are so routinely visited, but I also am very pleased to see new posts crack the top 5 as well from time to time.  If you missed these stories when they were originally posted, now is a great time to catch up on what so many people think are some of the best!

Before you take a look at these, please allow me to invite you to check out my recent series on Differentiation.  You can find an introduction to derivatives and differential calculus here, and then follow-up posts on an elementary differentiation technique and the power rule.
1. Stretching and Compressing Graphs.  Long live the king!  This is far and away one of my most popular posts, ever since its original posting nearly 6 years ago!  Pay it a visit to see what everyone is talking about.

2. Converting Point-Slope Form to Standard Form.  Another popular post, explaining how to go about converting your equation from point-slope to into standard form.  Along with slope-intercept form, these are the most common ways of expressing equations easily so that they can be graphed, so it's essential to understand how to convert between them.

3. Which Measure of Central Tendency to Use? Mode, Mean, or Median?  Do you know the differences between these three measures of "center?"  Where would you use a mean, and when would it be most appropriate to use median or mode.  Read my post to get some tips to help you choose the best method!

4. Special Angles in Trigonometry.  If you memorize - or better yet, understand - what these special angles are and how you can find them, then they will make working with triangles in trigonometry a lot easier!

5. Graphing - Parallel and Perpendicular Lines.  Graphing parallel or perpendicular lines is a very common task in learning mathematics.  In this post, I explain just what these terms mean, and specifically answer the question of how to determine if two lines are exactly perpendicular or not.
To find more great explanations and discussions of math concepts on my site, browse the Math Concepts Explained table of contents.  Alternately, you can enter your topic of interest in the search bar at the top of every page.

If you enjoy Math Concepts Explained, I invite you to join the many other students, teachers, and math enthusiasts who follow my site:
Thanks to all of my visitors for your support!