This is a collection of seven original articles written by the author over the past several years. The articles deal with various issues in science and mathematics. Here is a list of the seven articles: (1) Ratio of Surface Area to Volume in Nanotechnology and Nanoscience, (2) Chaos Theory Simply Explained, (3) Solving Equations with MATLAB, (4) Differential Equations with MATLAB, (5) Fibonacci Numbers with MATLAB, (6) The Golden Ratio with MATLAB, and (7) Regression Analysis with MATLAB. It is hope that the reader will find this collection useful and informative. It is good to have these articles available in one single volume.