For a CU Buff’s natural science core requirement, they’ll need to take one non-sequential course and one two-course sequence. While this may sound like a lot, getting it done over the next four years will be a breeze. However, it’s always smart to fill requirements like these with classes you’ll enjoy. There are so many courses you can take in pairs to fill this two-course requirement that it’s almost hard to choose, but this list of the top 6 courses will help you narrow it down.

1. The Solar System and Introductory Astronomy 2 (ASTR 1000-3 and 1020-4)

Astronomy at a college level is definitely harder than you’d think, but these introduction classes are super manageable if you’re into astronomy. The first course focuses on the basics of our solar system and dives into what really makes the universe so big and incredible, while the second course takes these more basic concepts and goes much deeper with the complexities. If the stars have always seemed like a good subject to study for you, these two classes will make getting this core requirement easy.


2. Biology: A Human Approach 1 and 2 (BIO 1030-3 and 1040-3)

If you’re someone that gets their science kick from watching Grey’s Anatomy, this class will suit you perfectly. BIO 1030 focuses on the principles of biology and how they play out in the human body, focusing more on the human response to the environment and ecology. The second course, BIO 1040, plays on the concepts learned in BIO 1030 and explores the human body’s reaction to ever changing conditions and uses more complex science to explain these concepts. These courses are advertised as recommended for non-science majors, so anybody who doesn’t consider science their forte will be just fine here.


3. Physics of Everyday Life 1 and 2 (PHYS 1010-3 and 1020-4)

Much like the courses listed in #2, these physics classes are designed specifically for nonscientists. This means that not only will these physics courses be introductory and relatively simple in their concepts, but they’ll also teach you aspects of physics that are applicable to your everyday life. Concepts range from simple physics principles to nuclear power to what’s going on in your microwave.


4. Introduction to Molecular Biology and Fundamentals of Human Genetics (MCDB 1030-3 and 1041-3)

The concept of genetics, whether you’re familiar with them or not, can be incredibly interesting when you get down to it. This particular introduction sequence first takes the students into the concepts behind molecular biology, discussing how they affect humans in terms of disease and basic development. The second course talks more about the principles of human genetics, such as pedigree analysis and how genetics can impact our DNA. Having this knowledge about what molecular biology means for the development of humankind can give you information about your own genetic buildup, which is a great topic to bring up at parties.


5. Introduction to Physical Anthropology 1 and 2 (ANTH 2010-3 and 2020-3)

Ever wonder how exactly humans became the creatures we are today? Those types of questions are just what you’ll find the answers to in these two classes. The first course in this sequence follows the evolution of humanity through different ages and uses science to analyze how humans turned out the way we are. The second course takes these concepts and broadens them, applying the same principles to different cultures around the world and scientifically gathering evidence from them. Anthropology is the study of humanity throughout different time periods, and if that sounds interesting to you, this is your first stop.


6. Introduction to Geology and Introduction to Earth History (GEOL 1010-3 and 1020-3 )

Geology is the study of rocks and the material found in the Earth. Colorado is filled with beautiful mountains, rocks, and other natural wonders that are perfect examples of what you’ll study in Intro to Geology. This class studies the formation, materials, characteristics, and impacts of the stuff found inside of our planet, while Introduction to Earth History gives context on how science uses these findings to learn more about the Earth’s formation. These classes give you the perfect excuse to do some hiking in the beautiful Flatirons – you know, for research.


Although some students might groan at the thought of having to complete two sequential science courses in a row, it doesn’t have to be such a pain. When it’s a subject you’re interested in, it’s easy to see how fascinating certain areas of science can be. If you’re having trouble choosing, don’t worry, it’s hard to choose from so many options. Any of these six course pairs will have you completing your prerequisites with no problem.



Madi Sinsel

Hello OneClass! My name is Madi and I'm a freshman at CU Boulder (sko buffs). I'm exploring various majors in the art field right now, and I'm specifically interested in graphic design and journalism. My hobbies include making lots of art, watching Netflix in copious amounts, and saying hi to every dog I see.

Related Articles

Final Exam
Study Guide

Get the best notes at

View All

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.