Welcome to Kobby's Online Math Notes.

Here, you will find notes on various math topics from the junior high school level, through senior high school, to the college or university level. Topics include algebra, geometry, trigonometry, calculus, and probability. You will also find PDFs of notes and worksheets on some topics.

Notes divided into three broad categories

The notes are classified into three broad categories:
Junior High Math
High School Core Math
High School Advanced Math

Junior High Math covers math topics for elementary and junior high school, High School Core Math covers math topics usually considered compulsory for all high school students, and High School Advanced Math covers math topics for high school students who would pursue math in the future.