Introduction

Physics 221, Elements of Physics I, Spring 2023, is an introductory physics class with laboratories.  To become familiar with the course layout and all the course requirements, please start with these steps.

Class structure

There are 12 modules.  Each module is divided into two parts.

Note: I strongly recommend submitting earlier than midnight on the due date and not waiting until the last minute.  You can submit all homework assignment multiple times.  Submitting early allows you to ask questions and get feedback if your first answer was incorrect, and it allows you to help other students once you have arrived at the correct answer.
If you need more help, attend the office/tutoring hours of the instructors.  They are offered at various time throughout the week.  You can attend the office/tutoring hours of any instructor.


The online material is my contribution to the class.  It covers all topics that may appear on homework assignments and tests.  Example problems are worked out in the online material.  The textbook presents the same material but expands on some aspects of it.  It is always beneficial to go over new material more than once.  Different presentations are better suited for different audiences.