Popfizz is transitioning to Cobi.Request Teacher Access 

Teach and Learn Computer Science Here

Ignite your 💜 for Computer Science.

Trusted by

College BoardCode.orgCSforAllCSTALAUSDMicrosoft TealsNYCRoblox

Everything you need to teach computer science

Start teaching computer science with these plug and play features

Autograder

Spend less time grading and more time engaging your students

Custom Course Creator

Add your own content, and customize the course to make it even more engaging.

Teacher Resources

Lesson plans, solution guides, slides and handouts are available to assist your teaching.

Autograde away

Instant grading

Our cutting-edge autograder takes the stress out of grading coding assignments, saving valuable time for teachers.

Accurate grading.
The autograder tests for various cases and ensures that students hit all the learning objectives designed for the project.
Instant feedback
Don't have your students wait for your feedback. Nothing stops your students from progressing!
Experiment.
The autograder doesn't limit your students from going beyond the task requirement.

Tailor-made

Customize your course

Do you have a timely resource you want to share with your class? A must-watch video? A coding project that fits perfectly with your Unit?

All types.
Whether it's a video, quiz, or an autograded project, you can add it to your course.
Reorder.
Do you want to introduce Objects later in the course? Simply drag and drop the Unit where you want to place it.
Maximize engagement.
Tailor your curriculum to meet the unique needs of your students.

Testimonials

We work with amazing educators

“The platform is easy to use and the live onboarding sessions helped us get started right away. This resource provides the rigor we were looking for and keeps students actively engaged in learning.”

Denise Ayres
Temple Independent School District

“The PD course gave me a clear understanding of the topics and it was fun to watch the videos. And the best thing - I passed the FTCE CS exam! The course helped me a lot. I highly recommend the PD course.”

Bonnie Yu
South Walton High School

“This course gave me exactly what I wanted: a thorough overview of the content of AP CS Principles without having to learn every detail. This was very valuable to me.”

Tricia Kellison
The Girls' Middle School

“The course breaks down concepts in a way that makes it easy for my students to understand.”

Cory Houghton
Earlham County High School

“Great videos, excellent problem solving tutorials and mix of quizzes and tests.”

Tony Finelli
Cherokee Bluff High School

“This PD accomplished two major things: I learned to set up and use a Raspberry Pi, and I learned how to teach it, including introductory CS content for students and misconceptions students have when learning to code. I'd recommend this PD to anyone who wants to start or improve teaching CS concepts and physical computing.”

Janet Weaver
Our Lady of the Gulf Catholic School

“Excellent questions that match the real exam content.”

Tat'yana Pashnyak
Wiregrass Ranch High School

The Geek-out Blog

Get the latest news and resources.

Take a tour of Cobi.
Try it out today.

Talk to us and get free premium access to test drive Cobi with your students.