- LIVE
- CTY-Level
- Computer Science and Technology
Arduino® Prototyping
What do punch-activated flamethrowers, automatic pet feeders, and mind-controlled drones have in common? They’re all real devices built and programmed using Arduino® microprocessors. This open-source ...
Next session begins:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
Art Meets Science: Literature
In this creative writing course, we’ll explore poetry, fiction, drama, and non-literary works that use science as inspiration. After reading scientific poems, science fiction short stories, and a play ...
Next start date:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
Art Meets Science: Nonfiction
In this course, we’ll read works inspired by science and art and use them as models to write and revise personal essays that explore the genre of nonfiction. You’ll reflect on personal experiences ...
Next start date:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Backyard Habitats
What creatures live around you, and how can you tell? How does gardening or mowing the lawn affect local animals and plants? What happens to bathtub water after it goes down the drain? Explore your ...
No upcoming classes
- LIVE
- CTY-Level
- Science and Engineering
Be a Biologist!
What can we learn from fossilized plants? What do biologists do as they study humans, plants, and animals? In this course, we’ll answer these questions and others as we learn about different types of biology, the study of living things, and the job requirements of various biologists.
Next session begins:
June 17, 2025
- LIVE
- CTY-Level
- Science and Engineering
Be an Environmental Scientist!
Why do animals adapt? What are the advantages of renewable energy? What do environmental scientists do? In this course, we’ll answer these questions and others as we learn about different types of environmental science and scientists who work in this expansive field.
Next session begins:
June 18, 2025
- LIVE
- CTY-Level
- Science and Engineering
Be the Doctor: The Science Behind the Symptoms
Doctors must make quick decisions based on their knowledge, experience, and a short list of symptoms—there is not always a simple solution, and lives are often on the line. In this course, we’ll learn ...
Next session begins:
September 10, 2025
- LIVE
- CTY-Level
- History and Social Science
Behavioral Economics
Why is it so hard to hail a cab in the rain in New York City? Why do some people pay for annual gym memberships when they would save on a pay-as-you go basis? Integrate ideas from the social sciences ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- History and Social Science
Bioethics in the Age of Pandemics
With the emergence of COVID-19, ethical issues in medicine have never been more pronounced in our social consciousness. Explore salient issues such as rationing scarce resources, making shutdown ...
Next session begins:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
Building Blocks
Start building your communication superpowers by learning just how cool words and language can be! In this course you will study excerpts from classic stories like Alice's Adventures in Wonderland, ...
Next start date:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Catching the Criminal
Print evidence can place suspects at a crime scene, identify missing persons, and exonerate the innocent. Begin with an overview of the history of print evidence, focusing on fingerprints, footprints ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Catching the Criminal: Fingerprints
Evidence can place suspects at a crime scene, identify missing persons, and exonerate the innocent. In this three-week mini course, we’ll focus on a particular type of evidence—fingerprints. We’ll ...
Next session begins:
September 10, 2025
- Session-Based
- CTY-Level
- Science and Engineering
Cause Unknown
Jordan is an 8-year-old orphaned girl of color with an unknown past who you are evaluating for seemingly unrelated ailments. As you implement her medical care, you'll consider its implications for her ...
Next start date:
June 16, 2025
- Club
- CTY-Level
- Mathematics
Chess Club
Welcome to the club! In CTY’s Chess Club, students who enjoy playing the game come together to practice their chess tactics and strategies in a community setting. Through forum discussion and the ...
No upcoming classes
- LIVE
- CTY-Level
- Science and Engineering
Cloudy with a Chance of Discovery
Books often ask you to dream up imaginary worlds, but in the case of Judi and Ronald Barrett’s classic children’s book Cloudy with a Chance of Meatballs, there are important science concepts behind ...
Next session begins:
September 14, 2025
- LIVE
- CTY-Level
- Science and Engineering
Coasters and Corkscrews: Amusement Park Physics
Have you ever wondered why you slide into your friend when you're on the Tilt-A-Whirl, or why you don't fly out of a rollercoaster even when you're traveling upside down? Examine the physics of our ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Code and Compose: Create Digital Music and Animation
In this course, we will blend creativity and technology through hands-on experiences using the Makey Makey app and Scratch programming language. We'll design interactive controllers from everyday ...
Next session begins:
September 10, 2025
- LIVE
- CTY-Level
- Computer Science and Technology
Coding and Creating With Arduino®
What do punch-activated flamethrowers, automatic pet feeders, and mind-controlled drones have in common? They’re all real devices built and programmed using Arduino® microprocessors. This open-source ...
Next session begins:
September 9, 2025
- LIVE
- CTY-Level
- History and Social Science
Color of Law
Stories of discrimination capture headlines in America daily, reflecting how the promise of equal protection under the law is still unrealized for people of color. The United States is far from alone ...
Next session begins:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
Crafting Fiction
Learn to master the core elements of fiction writing, such as plot, theme, dialogue, and character development by reading and analyzing short works of fiction and writing your own. Assignments are ...
Next start date:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
Crafting Poetry
An introduction to poetry and poetic concepts, this course covers musical aspects of poetry, the patterns and conventions of sound, and the effects they have on readers. Imagery in poems is also ...
Next start date:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
Crafting the Essay - Independent (NCAA Approved)
Deepen your understanding of sentence structure, narrative voice, and storytelling to bring experiences to life on the page in this personal-essay course. Through 10 assignments, you will experiment ...
- Session-Based
- CTY-Level
- Language Arts
Crafting the Essay - Workshop
Bring your experiences to life on the page in this personal essay course. Through 10 assignments, we will experiment with different essay forms to describe scenes, illustrate conflicts, narrate events ...
Next start date:
June 16, 2025
- Individually Paced
- CTY-Level
- Language Arts
Crafting the Essay: Individually-Paced Format
Bring your experiences to life on the page in this personal essay course. Through 10 assignments, we’ll experiment with different essay formats to describe scenes, illustrate conflicts, narrate events ...
- LIVE
- CTY-Level
- Language Arts
Creating Fantasy Worlds
What makes a fantasy world feel real in a reader’s mind? How do writers draw and keep readers’ attention while crafting these mythical places? In this course, we will apply geography, cartography, and ...
Next session begins:
September 10, 2025
- LIVE
- CTY-Level
- Science and Engineering
Creative Coding: Drawing with Python
In this course, we will explore the intersection of art, math, and technology using the Python Turtle graphics library to create colorful digital patterns, animations, and interactive designs. Through ...
Next session begins:
September 9, 2025
- LIVE
- CTY-Level
- Language Arts
Creative Nonfiction
In this course, we will read short works of nonfiction, analyze published authors' techniques, and practice specific writing skills in a supportive community of our peers. We will learn how to select ...
Next session begins:
September 11, 2025
- LIVE
- CTY-Level
- Mathematics
Cryptology: Cracking Codes
Unlock the world of secret communication in this engaging, fast-paced introduction to cryptology. Over six weeks, during live weekly sessions with your classmates and instructor, we’ll explore how ...
Next session begins:
September 9, 2025
- Individually Paced
- CTY-Level
- Mathematics
Cryptology: Math and Codes
Make and break secret codes in this exciting introductory cryptology course. You’ll begin with simple Caesar ciphers, learning to encrypt and decrypt messages as well as the history behind the cipher ...
- LIVE
- CTY-Level
- Language Arts
CTY Reading Challenge
Calling all enthusiastic readers! Do you like talking about books almost as much as you like reading them? Join our 12-week reading challenge to meet other curious and motivated readers and talk about books. This course meets six times over 12 weeks and is guided by an instructor. Every two weeks, we’ll take up a new challenge: to select and read a book that satisfies the challenge category. In between meetings, we’ll engage in virtual discussions and prepare reviews on the book(s) we’ve read.
Next session begins:
June 19, 2025
- LIVE
- CTY-Level
- Mathematics
Data and Chance
This is an Online course adapted from the On-Campus course Data and Chance. Your CTY friend teaches you a dice game. If you roll a 4, you win and the game ends. If your friend rolls a 5, they win and the game ends. You take turns rolling until one person wins. If you roll first, what is the probability you will win? This course explores probability and statistics, two areas of mathematics that easily transfer from the classroom to the real world.
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Diagnosis: Be the Doctor
Doctors often have to make quick decisions based on their knowledge, experience, and a short list of symptoms—it’s not so easy to always get it right, and lives are often on the line. Drawing upon ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Mathematics
Disease Modeling
When the threat of pandemic looms, all eyes turn to the experts. Each outbreak is unique and raises different concerns; in providing answers, infectious diseases specialists rely on data and accurate ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Mathematics
Economic Chaos: Understanding Volatile Markets
What does it mean when bubbles burst, stock markets crash, and hyperinflation takes off? How do these major economic events affect businesses and individuals around the world? COVID-19 was one such ...
Next session begins:
September 10, 2025
- Individually Paced
- CTY-Level
- Mathematics
Elementary School Competitive Mathematics
Strengthen your analytical and problem-solving skills in this challenging course designed for students with little to no previous math competition experience. You’ll learn 12 different problem-solving ...
- LIVE
- CTY-Level
- Science and Engineering
Engineering Design
Engineering design is a rich, sometimes chaotic blend of concerns: aesthetic, financial, material, theoretical, environmental, and practical. Explore elements of design theory while responding to a ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Everyday Science
What can a bucket of water or lounging beneath a shade tree teach you about science? Archimedes discovered the principle of buoyancy in a bathtub, and Newton allegedly discovered gravity while sitting ...
Next session begins:
September 14, 2025
- Session-Based
- CTY-Level
- Mathematics
Excursions in Pre-algebra
Explore how mathematics relates to food, art, and history in this interactive pre-algebra course. Through weekly meetings, collaborative activities, and hands-on projects, you’ll sharpen your ...
Next start date:
September 8, 2025
- LIVE
- CTY-Level
- Language Arts
Fantasy Worldbuilding
What draws audiences into the settings of their favorite fantasy worlds? What makes these otherwise mythical places feel like real locations in readers’ minds? In this course, we’ll use applications ...
Next session begins:
June 16, 2025
- Session-Based
- CTY-Level
- Language Arts
From Structure to Style
Develop your writing style and study advanced English mechanics in this rigorous grammar course. Guided by a college-level textbook and multicultural reading excerpts, you will deepen your ...
Next start date:
June 16, 2025
- LIVE
- CTY-Level
- Mathematics
Game Design
What counts as a game? What are games made of? How are successful games designed and built? Read theory that orients you to how games work, why people play them, and what makes a good game. Play ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Mathematics
Game of Life: The Theory of Strategic Behavior
How do individuals interact? How do they cooperate, compete, and respond to incentives? All involve strategic behavior, the purview of the economic theory of games. Study game theory through ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Mathematics
Game Theory and Strategy
Humans tend to make decisions based on emotions, rather than using cold, hard math—but when we learn to use strategy in decision-making, we can make more rational choices, minimize biases, and achieve ...
Next session begins:
September 10, 2025
- LIVE
- CTY-Level
- Science and Engineering
Genetics Uncovered: The Science of You
Has anyone ever told you that you have your mother’s eyes? Or your father’s nose? Or even your great aunt’s hair? Whether they know it or not, they are talking about your genes. Your genetic makeup ...
Next session begins:
September 10, 2025
- LIVE
- CTY-Level
- Mathematics
Geometric and Spatial Reasoning
Geometric and spatial reasoning skills are essential for living in and making sense of the world around us. Everything from solving a jigsaw puzzle to arranging furniture to efficiently packing a bag ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Mathematics
Geometry and Spatial Sense
Geometric and spatial reasoning skills are essential for living in and making sense of the world. Everything from solving a jigsaw puzzle to arranging furniture to efficiently packing a suitcase ...
Next session begins:
September 8, 2025
- LIVE
- CTY-Level
- Language Arts
Global Mythologies: Greece and Rome
Ancient Romans adopted and adapted Greek stories, and, over centuries of expansion, carried them to peoples and cultures across Europe and around the Mediterranean. Greco-Roman mythology still ...
Next session begins:
September 9, 2025
- LIVE
- CTY-Level
- Language Arts
Grammar in Action: Building Sentences That Shine
This engaging course explores the essential components of language and how grammar forms the foundation of writing. We’ll learn how to use various English grammar conventions to write with precision ...
Next session begins:
September 11, 2025
- LIVE
- CTY-Level
- Science and Engineering
Gross Science: Microorganisms
The human body is amazing— and sometimes, gross. From the blood inside us to the gas that comes out, each slimy, gunky, or smelly part has a vital role to play in keeping us healthy. In this three ...
Next session begins:
September 9, 2025
- LIVE
- CTY-Level
- Science and Engineering
Grossology
The human body is an amazing but sometimes gross thing. From the blood inside us to the gas that comes out, each slimy, gunky, or smelly part has a vital role to play in keeping us healthy. Why do we ...
Next session begins:
June 16, 2025
- Club
- CTY-Level
- Mathematics
High School Competitive Math Club
Want to solve problems and learn strategies with other kids who love competitive math? Then welcome to the club! Through weekly meetings and asynchronous forum discussion, you’ll work with a small ...
Next start date:
June 16, 2025
- Individually Paced
- CTY-Level
- Mathematics
High School Competitive Mathematics I
Develop your problem-solving skills and your mathematical creativity while preparing for contests like the American Mathematics Competition (AMC). You'll learn to think at an advanced level while ...
- Individually Paced
- CTY-Level
- Mathematics
High School Competitive Mathematics II
Develop your problem-solving skills and your mathematical creativity while preparing for contests like the American Mathematics Competition (AMC). This course will extend the skills you learned in ...
- Individually Paced
- CTY-Level
- Mathematics
High School Competitive Mathematics Prep
Broaden your skills in problem-solving to foster mathematical creativity and prepare yourself for contests like the American Mathematics Competition (AMC). You'll learn to think at an even more ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Algebra I
Explore variables, expressions, and linear, exponential, and quadratic function applications in this full-length online Honors Algebra I course. We’ll use modeling and real-life scenarios to extend ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Algebra II
This full-length online Honors Algebra II course expands upon topics introduced in Algebra I to teach you how to manipulate and apply more advanced functions and operations to polynomials, radicals ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Geometry
This course covers concepts typically offered in a full-year honors geometry course. You’ll explore geometric proofs, triangle relationships, transformations, right triangle trigonometry, circles ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Grade 3 Mathematics
This course covers a full-year honors curriculum, aligned with the Common Core State Standards, to prepare students for success in grade 4 mathematics. We’ll start by reviewing grade 2 concepts and ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Grade 4 Mathematics
Tackle lessons typically offered in a full year of honors math curriculum in this intensive course that offers a review of Grade 3 topics and prepares you for Grade 5 mathematics. Engage with videos ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Grade 5 Mathematics
Tackle a full year of honors mathematics with this Grade 5 curriculum that will set you up for success in Grade 6 honors math. You’ll begin by reviewing concepts such as algebraic variables and ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Grade 6 Mathematics
Tackle a full year of honors mathematics with this Grade 6 curriculum that will set you up for success with Honors Pre-Algebra. In this course, students will be introduced to the theory and ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Grade 7 Mathematics
This full-year, Common Core-aligned course explores proportional relationships, statistical sampling, linear expressions and equations, and two- and three-dimensional geometry. You’ll grow comfortable ...
- Individually Paced
- CTY-Level
- Mathematics
Honors Grade 8 Mathematics
This full-year Common Core-aligned course focuses on the study of algebraic manipulation and graphical interpretations as you cover topics taught in preparation for Honors Algebra I. You’ll grow ...
- Session-Based
- CTY-Level
- Science and Engineering
Household Chemistry
Discover the role that chemistry plays in your everyday life in this experiment-intensive course. Through hands-on chemistry activities, you’ll learn about the states of matter, explore different ...
Next start date:
June 16, 2025
- LIVE
- CTY-Level
- Language Arts
Imagination Workshop
Imaginative writing is a powerful tool. As authors, our written pieces can make someone laugh, change their mind, or even help them better understand the world. How can you do this in just a page, a ...
Next session begins:
June 16, 2025
- Session-Based
- CTY-Level
- Mathematics
Intermediate Chess
In Intermediate Chess, you will expand your knowledge of tactics and strategies in the game of chess. Starting with opening goals, you will learn tactical motifs and strategies to employ through a ...
Next start date:
June 16, 2025
- Individually Paced
- CTY-Level
- Mathematics
Introduction to Abstract Mathematics
Construct logical arguments as a proof to verify mathematical statements in this college-level course that follows Multivariable Calculus and builds upon Linear Algebra. Techniques and methods of ...
- Session-Based
- CTY-Level
- Mathematics
Introduction to Chess
Introduction to Chess provides new or beginning students with a strong foundation in the game’s rules and strategies, and a community of enthusiasts to learn alongside. You’ll begin with a brief ...
Next start date:
June 16, 2025
- Individually Paced
- CTY-Level
- Mathematics
Introduction to Complex Analysis
This course will introduce you to the theory of functions of a complex variable—a core area of mathematics. We will also cover complex numbers and their properties, analytic functions and the Cauchy ...
- LIVE
- CTY-Level
- Science and Engineering
Introduction to Crime Scene Investigation
Put on your thinking cap and begin studying forensic science, starting with historical perspectives about the use of forensics to investigate and solve crimes. We’ll review the history and development ...
Next session begins:
September 9, 2025
- Session-Based
- CTY-Level
- Science and Engineering
Introduction to Forensics (NCAA Approved)
Put your thinking cap on to begin studying concepts in forensic science, starting with historical perspectives covering the use of forensics to investigate and solve crimes. You’ll go over history and ...
Next start date:
June 16, 2025
- Session-Based
- CTY-Level
- Mathematics
Introduction to Logic and Proofs
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 ...
Next start date:
June 16, 2025
- Session-Based
- CTY-Level
- Science and Engineering
Inventions in Engineering
Calling all inventors! CTY’s Inventions in Engineering course introduces young students to the imaginations, habits, and characteristics of successful inventors, and the history and impact of their ...
Next start date:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Inventions: Catapults
Did you know the idea for the microwave started with a candy bar? Inventor Percy Spencer was standing in front of a magnetron when he noticed his chocolate treat was melting in his pocket. When ...
Next session begins:
June 16, 2025
- LIVE
- CTY-Level
- Science and Engineering
Inventions: Rube Goldberg Machines
During this Inventions mini course, we’ll explore the principles of invention by focusing on Rube Goldberg machines, an intentionally intricate device that executes a simple task through a series of ...
Next session begins:
June 18, 2025