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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: January 22, 2025

Grades 7-10

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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: January 21, 2025

Grades 8-10

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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: January 21, 2025

Grades 6-8

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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

Grades 3-4

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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: January 25, 2025

Grades 2-3

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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: January 25, 2025

Grades 2-3

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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

Grade 10+

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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: January 21, 2025

Grades 3-4

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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: January 22, 2025

Grades 5-6

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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

Grades 7-10

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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 ...
Next start date: January 21, 2025

Grade 4+

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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

Grade 9+

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Crafting Fiction (NCAA Approved)
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: January 21, 2025

Grade 8+

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Crafting Poetry (NCAA Approved)
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: January 21, 2025

Grade 8+

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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 ...

Grades 5-7

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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: January 25, 2025

Grades 6-8

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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: January 25, 2025

Grades 5-6

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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: January 25, 2025

Grades 7-10

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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

Grades 7-10

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Elementary Number Theory
Register before December 17, 2024 to start on or before December 31, 2024. This course is not accepting enrollments starting after December 31, 2024. In this course we’ll get to know the deep theory ...

Grade 7+

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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

Grades 7-10

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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: January 21, 2025

Grades 6-9

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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: January 22, 2025

Grades 5-6

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From Structure to Style (NCAA Approved)
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: January 21, 2025

Grades 7-10

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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

Grades 7-10

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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: January 22, 2025

Grades 3-4

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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: January 22, 2025

Grades 3-4

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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: January 21, 2025

Grade 7+

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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 ...

Grades 6-9

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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 ...

Grades 7-11

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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 ...

Grades 6-11

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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 ...

Grades 2-3

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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 ...

Grades 2-4

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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 ...

Grades 3-5

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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 ...

Grades 4-6

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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 ...

Grades 5-7

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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 ...

Grades 6-8

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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: January 21, 2025

Grades 3-5

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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: January 25, 2025

Grades 5-6

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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: January 21, 2025

Grade 4+

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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 ...

Grade 10+

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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: January 21, 2025

Grades 3-8

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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 ...

Grade 10+

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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: January 21, 2025

Grade 7+

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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: January 21, 2025

Grades 3-5

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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 Spencer held a bag of corn kernels next to the magnetron and they started popping, he knew he was on to something. In this course, we'll explore the principles of invention by focusing on one of history's most exciting creations: the catapult. Students will delve into the history and mechanics of catapults, experimenting with building their own models to understand the science behind this ancient tool. Join us to uncover the magic of invention and apply creative thinking to solve problems just like the great inventors did!
Next session begins: January 25, 2025

Grades 3-4

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Mathematical Proofs
Reasoning, logic, and critical thinking are the building blocks of intellectual inquiry. Focus on developing these skills through problem-solving and exposure to a wide range of topics in mathematics ...
Next session begins: January 25, 2025

Grades 5-6

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Mathematics of Pixar
Learn how digital artists animate the mouth of a Toy Story character by manipulating a single point on a polygon, or how combinations are applied to turn three unique robot designs into 3,000 ...
Next session begins: January 25, 2025

Grades 4-5

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Mean Genes!
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: January 22, 2025

Grades 5-6

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Microbiology
SARS-CoV-2, the virus that causes COVID-19, is about 100nm in size but has caused a global pandemic. How can something so small cause so much damage? Explore different types of viruses and bacteria ...
Next session begins: January 22, 2025

Grades 4-5

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Modern Cryptography
In the age of digital surveillance, apps boasting end-to-end encryption such as WhatsApp and Telegram have flourished. What are these tools, and how do they work? How have developments in modern ...
Next session begins: June 16, 2025

Grades 7-10

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Numbers: Zero to Infinity
This is an Online course adapted from the On-Campus course Numbers: Zero To Infinity. What does a subatomic particle measured in femtometers have in common with a galaxy measured in light years? Both are a part of the unique human effort to quantify the world around us. In this course, we’ll explore numbers, from the very small to the unimaginably large, and learn how numeric representations help to explain natural phenomena such as time, distance, and temperature.
Next session begins: January 21, 2025

Grades 4-5

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Polymers to the Rescue!
What do your T-shirt, water bottle, and DNA have in common? They’re all made of chemical units called monomers, which combine to form polymers. To make the world a better place, scientists regularly ...
Next session begins: June 16, 2025

Grades 5-6

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Problem Solving Strategies
Develop strategies for solving a wide variety of word problems using resources from Ken Johnson and Ted Herr’s Problem Solving Strategies: Crossing the River with Dogs and Other Mathematical ...
Next session begins: January 25, 2025

Grades 4-5

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Project Mars
You and your classmates take on the role of intrepid interplanetary explorers, designing a space probe, learning about the complexity of landing an exploration vehicle, and planning a Martian colony ...
Next session begins: January 22, 2025

Grades 4-5

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Race Matters
Throughout history, the concept of race has been used to perpetuate issues and systems of social inequality. In this course, you’ll study race as a social construct, examine the historic development ...

Grade 9+

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Satire, Comedy, and Politics
As forms of cultural and political expression, satire and comedy are important tools for exposing uncomfortable truths about powerful individuals and institutions that might otherwise seem untouchable ...
Next session begins: June 16, 2025

Grades 7-10

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Science in a Bucket
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: June 16, 2025

Grades 2-3

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Statistical Reasoning in Sports
In football, does the home team really have an advantage? Does dribbling the basketball before shooting a free throw increase the odds of scoring? Where should a goalie stand to block the most penalty ...
Next session begins: June 16, 2025

Grades 7-10

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Storytelling Through Art, Film, and Media
Photography, video games, short films—these are all elements of visual storytelling that are increasingly popular ways to express an idea, theme, or story in today’s digital world. This hands-on ...
Next start date: January 21, 2025

Grades 7-9

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Survey of Cryptography
Surveil the world of cryptography, the science of secret-keeping. From passing notes in class to keeping online banking transactions secure, the need for confidential communication has been present ...
Next session begins: January 22, 2025

Grades 7-10

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Taking a Chance: Mathematics of Game Shows
Step right up and try your hand at solving some of the world’s classic math conundrums! We have options galore: Plinko, Golden Balls, Deal or No Deal, and many more. Pull the curtain back on the ...
Next session begins: January 22, 2025

Grades 5-6

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The Ancient World: Ancient Egypt
Between 3000 BCE and 500 CE, influential civilizations left lasting legacies that continue to shape our world today. In this course, we'll focus specifically on Ancient Egypt, exploring its distinctive geography, daily life, social structures, government, economy, and religion.
Next session begins: January 25, 2025

Grades 3-4

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The Mathematics of Money
This is an Online course adapted from the On-Campus course The Mathematics of Money. Have you ever wondered why round-trip fares between cities vary, or how changes in interest rates impact the real estate market? Discover how mathematics influences everyday financial decisions in this online enrichment course! This course will provide you with a solid grasp of essential business and finance concepts, including the mathematics of buying and selling; the effects of simple and compound interest on loans, mortgages, and savings; and the role of taxes in personal and government budgets.
No upcoming classes

Grades 7-10

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The Mathematics of 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? Focus on the boom-bust ...
Next session begins: January 22, 2025

Grades 7-10

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The Physics of Sports
This is an Online course adapted from the On-Campus course The Physics of Sports. Ever wondered how a baseball curves mid-pitch or why an ice skater spins faster by pulling in their arms? Curious about how LeBron James makes those incredible slam dunks and precise three-pointers? Physics is the key to unlocking these and other intriguing sports phenomena. In this course, we'll delve into the mechanics of sports, exploring concepts such as kinematics, dynamics, momentum, energy, and power.
Next session begins: January 21, 2025

Grades 7-10

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The Process of Writing – Workshop
This course explores the craft of writing, including techniques like brainstorming, outlining, drafting, and revision that effective writers use across multiple genres. You will write a family ...
Next start date: January 21, 2025

Grades 5-6

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The Psychology of Memory
Why are some things easier to remember than others? Why do people have vastly different memories of the same event? Why do most people remember Darth Vader saying, “Luke, I am your father,” when what ...
Next session begins: June 16, 2025

Grades 7-10

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The Way to Win: An Introduction to Game Theory
Mathematicians have studied games for over a century. How do they analyze them? In this course, we’ll learn combinatorial game theory pertaining to games of perfect information, such as Go and chess. In these games, there are no dice or hidden cards; all game information is known to players except their individual strategies. In this introduction to combinatorial game theory, we’ll learn mathematical concepts such as disjunctive sum and Grundy numbers, and use them to explore winning strategies in games such as Nim, Domineering, and Hackenbush. Between class meetings, students will also explore optional readings and resources, and dive deeper into the history and application of combinatorial game theory.
Next session begins: January 21, 2025

Grades 6-8

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Through the Lens
When you look at a photograph, what do you see? You find photographs everywhere—in journalism, art, family albums, and social media. What stories do they tell? Explore the ways that photographs can ...
Next session begins: January 25, 2025

Grades 4-5

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Unquiet Minds
Nearly one in six people globally has a neurological disorder. Despite how common they are and how effective treatment can be, neurological disorders are often misunderstood and marginalized. Explore ...
Next session begins: January 22, 2025

Grade 10+

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Worldbuilding
Fictional worlds often stick with us even longer than the stories that are set within them. They can be havens or nightmares, futuristic glimpses of what our world could be, or looking-glass critiques ...
Next session begins: June 16, 2025

Grades 7-10

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Writing About Art and Visual Design
Do you have a flair for design, and an eye for what makes a scene or image visually effective? In this course, you will explore historically significant and modern works of visual design—including ...
Next start date: January 21, 2025

Grade 9+

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Writing for an Audience – Workshop
In this course, you will use the drafting and revision skills you learned in The Process of Writing to practice clearly communicating your ideas to an audience. You will reflect on your relationship ...
Next start date: January 21, 2025

Grades 6-7

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