Here are some popular options for free coding resources for kids:

1. Scratch – Scratch is a free programming language and online community created by MIT for kids to create and share interactive stories, games, and animations.
2. Code.org – Code.org offers free coding courses for kids of all ages, including courses on block-based programming, web development, and more.
3. Khan Academy – Khan Academy offers free programming courses for kids, including courses on JavaScript, HTML/CSS, and SQL.
4. Tynker – Tynker offers free coding courses and puzzles for kids, as well as premium features for a fee. Tynker uses a block-based coding language and offers courses on game design, animation, and more.
5. Codecademy – Codecademy offers free coding courses for kids in web development, programming, and data science.
6. Alice – Alice is a free programming environment created by Carnegie Mellon University that teaches kids how to create 3D animations, stories, and video games.
7. App Lab – App Lab is a free programming environment created by Code.org that teaches kids how to create their own mobile apps using block-based programming.
8. Codemoji – Codemoji is a free platform that teaches kids how to code by using emojis instead of traditional programming syntax.

These are just a few of the many free coding resources available. Depending on your child’s interests and age, you may find other resources that are more tailored to their needs.