Introduction to Logic and Proofs
- Grade 7+
Explore advanced mathematical concepts in fun and interesting ways and build a strong foundation for high school, computer science, and college-level logic coursework in this introductory logic class.
Through logic puzzles, adaptive world arguments, peer collaboration and feedback, you’ll strengthen your understanding of mathematics and sharpen your problem-solving skills as you delve into these key mathematical ideas.
This course is ideal for curious students who are eager to deepen their understanding of mathematics through games, world applications, and collaboration.
In addition to weekly virtual class meetings, students may schedule weekly one-on-one virtual meetings directly with the instructor to answer questions or concerns.
Early fall, winter, mid-summer: Tuesday 7-8 p.m. ET
Late fall, spring, early summer: Wednesday 7-8 p.m. ET
Time Commitment: 9-11 hours per week (1 hour of class time, 8-10 hours of independent work).
Register for an Online course by selecting an open class below. If no open classes are listed, then course enrollment is currently closed. Note: You will need to have an active CTY Account to complete registration through MyCTY.
For LIVE summer courses offered in June, please note the first virtual class meeting will be held on Tuesday, June 20. All other LIVE class meetings will be held on Mondays, Wednesdays, and Fridays.
For Session-Based classes with synchronous meetings, your instructor will communicate with you to schedule the first class meeting.
Testing and Prerequisites
|Required Level||CTY-Level||Not required|
Students must achieve qualifying scores on an advanced assessment to be eligible for CTY programs. If you don’t have qualifying scores, you have several different testing options. We’ll help you find the right option for your situation.Sign up for Testing Learn More
Course PrerequisitesIntroduction to Logic and Proofs requires:
Successful completion Honors Algebra I or equivalent
Cost and Financial Aid
- Nonrefundable Application Fee - $15 (Waived for financial aid applicants)
- Nonrefundable International Fee - $20 (outside US only)
Financial Aid is available
We are committed to serving all talented youth regardless of financial circumstances. Financial assistance is available based on need.
This course requires a computer with high-speed Internet access and an up-to-date web browser such as Chrome or Firefox. You must be able to communicate with the instructor via email. Visit the Technical Requirements and Support page for more details.
This course uses a virtual classroom for instructor-student communication. The classroom works on standard computers with the Zoom desktop client, and on tablets or handhelds that support the Zoom Mobile app. Recorded meetings can only be viewed on a computer with the Zoom desktop client installed. The Zoom desktop client and Zoom Mobile App are both free to download.
About Mathematics at CTY
Our online Mathematics courses—spanning elementary through college-level curricula—cover a wide range of topics, from algebra and geometry to chess, cryptology, and AP Calculus and are guided by expert instructors. You’ll join group sessions with classmates to ensure you stay on track with challenging course content. Whether you’re looking for pure math fun and enrichment, to move up the math ladder and advance your honors and AP (and beyond) academic standing, or to train for mathematics competitions, there’s a CTY course that’s right for you.
Join the exciting world of competitive math
Participate in the High School Math Club or enroll in 6 IP courses: Middle School Competitive Math I, Middle School Competitive Math II, Middle School Competitive Math III, Competitive Mathematics Prep, Competitive Mathematics I, Competitive Mathematics II.