Order Your Code Your World Kit

Over 150,000 kids will learn computer science with this year’s NYSD challenge. Help us reach our goal by ordering your kit!


Code Your World

This October, 4‑H and Google launched an exciting National Youth Science Day challenge, Code Your World, inviting kids to get involved in computer science (CS) through hands-on doing. The national NYSD celebration kicked off October 1, and coding events can take place October through February.

Easier than ever to facilitate, Code Your World is a four-part challenge that teaches kids ages 8-14 to apply CS to the world around them through hands-on activities. Developed by Google and West Virginia University Extension Service, it includes a computer-based activity on Google’s CS First platform and three unplugged activities that bring coding to life through games and interaction.

Purchase your Code Your World kit below to get involved with National Youth Science Day.

Order Your Code Your World Kit

Invite kids to get involved in computer science with our Code Your World Challenge! Code Your World uses games and hands-on fun to teach kids important CS and computational thinking concepts, and is perfect for first-time and beginner coders ages 8-14.

What to Expect with NYSD

Code Your World is easy for volunteers, parents, and clubs with or without computer science experience to facilitate. The accompanying kit includes clear instructions for facilitators and offers both low and no-tech options for events without Internet access.

This year’s activity will not only teach computer science to kids, but also build confidence and teach skills relevant across fields from agriculture to technology to the arts.

Check out the 2018 National Youth Science Day how-to video to learn more about this year’s Code Your World challenge.

National Youth Science Day

National Youth Science Day (NYSD) provides access and opportunity for kids to learn about STEM topics (science, technology, engineering and math) by participating in a hands-on STEM challenge.

For the past ten years, 4‑H has developed hands-on challenges that shows kids how STEM skills can be applied to the world around them. This fall, we expect to reach more than 150,000 kids at thousands of events across all 50 states through NYSD.

4‑H will hold NYSD events from October through February in classrooms, clubs, homes and after-school spaces across the country. Check out a preview of this year’s Code Your World challenge and find out how you can get involved!

Kit Materials

Check out the resources below to get started with this year's National Youth Science Day challenge, Code Your World. Check back soon for additional resources.

Learn everything you need to know to facilitate a set of interactive activities designed to get kids excited about computer science (CS) through hands–on learning.


Code Your World Facilitator Guide (Spanish Version)


This workbook is designed to accompany students participating in the Code Your World challenge.


Code Your World Youth Workbook (Spanish Version)


This playbook provides elements of 4‑H Positive Youth Development in tandem with the latest CS resources and activities. It also provides guidance for 4‑H educators, volunteers and teen leaders to integrate CS into any aspect of the 4‑H experience.


Marketing Materials

Check out the marketing resources below to help spread the word about this year’s challenge, Code Your World.

Past Experiments

4‑H National Youth Science Day is the premier national rallying event for year-round 4‑H Science programming, bringing together youth, volunteers and educators from all over the country to simultaneously complete the National Science Experiment.

2017: Incredible Wearables

Developed by the University of Nebraska – Lincoln, Incredible Wearables is a fun way for kids to build wearable fitness trackers.

2016: Drone Discovery

Drone Discovery was developed by Cornell University Cooperative Extension. It’s a hands-on engineering design challenge that explores the science behind drones and how they are being used to solve real world problems.

2015: Motion Commotion

Developed by Oregon State University Cooperative Extension, Motion Commotion is a two-part experiment that investigates the physical and human factors of motion using toy cars to simulate a speeding car collision and distracted driving.

2014: Rockets to the Rescue

The University of Arizona developed Rockets to the Rescue, which explores the field of aerospace engineering. Youth learn engineering concepts, develop math skills, learn about nutrition and help solve a relevant, global issue.

2013: 4‑H Maps & Apps

With 4‑H Maps & Apps, young people become geospatial thinkers as they design and map their ideal park, use GIS mapping to solve community problems and contribute data about their community to the United States Geological Survey (USGS).

2012: Eco-Bot Challenge

In the 4‑H Eco-Bot Challenge, youth test the interaction between the Eco-Bot’s environmental engineering design features and various control surface configurations to determine the most effective environmental clean-up solution for a simulated toxic spill.

2011: Wired for Wind

Wired for Wind explores how to engineer renewable energy technologies and the positive impact that they can have in communities across the country and the world.

2010: 4‑H2O

4‑H2O is designed to engage youth in asking the question: Why is water quality important and why is it important to understand it now?

2009: Biofuel Blast

Biofuel Blast explores the production of the biofuel ethanol.

2008: Helpful Hydrogels

In Helpful Hydrogels, youth explore a new superabsorbent polymer – called hydrogel – that can help with water conservation right in our own backyards.