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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: September 9, 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: September 10, 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 ...
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Grades 10-12

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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 ...
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Grades 5-6

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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 ...

Grades 9-12

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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

Grades 5-6

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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

Grades 7-11

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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

Grades 5-6

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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: September 14, 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: September 11, 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 ...
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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 ...
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Grades 7-10

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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

Grades 2-3

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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 ...
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Grades 5-6

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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 ...
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Grades 7-10

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