Arduino is an open-source project that created microcontroller-based kits for building digital devices and interactive objects that can sense and control physical devices.

Explore free courses, activities, and curriculum designed to teach computer science and coding for grades K-12+ from Code.org

List of 60+ Free STEM Resources and Opportunities for BIPOC, APPIs, and Allies from Columbia University's Engineering Bootcamp blog.

Common Sense Media is the leading independent nonprofit organization dedicated to helping kids thrive in a world of media and technology. They empower parents, teachers, and policymakers by providing unbiased information, trusted advice, and innovative tools to help them harness the power of media and technology as a positive force in all kids’ lives.

Curiosity Machine invites you to practice by building hands-on engineering design challenges. They believe that through building, you learn not only how something works, but why it works.

PBS Kids Design Squad features activities, videos, games, and contests. Kids ages 8 and up can learn about the design process and the connection between engineering and the things we use in everyday life.

Explore the field of engineering including design processes and career pathways, plus complete engineering design challenges with Hour of Engineering.

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Instructables is a place that lets you explore, document, and share your creations.

Made with Code is a Google site geared towards inspiring girls to pursue their dreams with code. Design an emoji, build a Snapchat filter, design an avatar--the possibilities are endless!

Make: Magazine is a publication of Maker Media.  Maker Media is a global platform for connecting Makers with each other, with products and services, and with their partners.

The Raspberry Pi is a series of credit card-sized single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote the teaching of basic computer science in schools and developing countries.

With Scratch you can program your own interactive stories, games, and animations — and share your creations with others in the online community.

Sylvia’s Super Awesome Maker Show is a DIY webshow on everything cool and worth Making.

The Tinkering Studio is a studio workshop at the Exploratorium for playful invention, investigation, and collaboration.

Lots of resources you can use to do hands-on projects around tinkering, simple electronics, simple machines, engineering, and coding. Thanks to future engineer, Liza, for suggesting this resource!

The Ultimate STEM Guide for Kids offers a list of links to over 200 STEM websites for all ages. Also a page for book recommendations.