Here is Jay’s growing collection of chain reaction tips, techniques, and tutorials for building simple mix-and-match parts for your more complex Rube Goldberg Machines. Lots of pics and examples. We’re just getting started with this section, so let us know if you’d like to see something taken apart, broken down, and put back together again!
![Playful Engineers 3 Step Sequence](https://www.playfulengineers.com/wp-content/plugins/pt-content-views-pro/public/assets/images/lazy_image.png)
Playful Engineers 3 Step Sequence
Play-based learning is at the heart of everything we do at Playful Engineers, that’s why it’s in our name! And ...
![Chain Reactions: How-to Build a Multi-Track Ball Feeder](https://www.playfulengineers.com/wp-content/plugins/pt-content-views-pro/public/assets/images/lazy_image.png)
Chain Reactions: How-to Build a Multi-Track Ball Feeder
A step by step STEAM tutorial on how to build a Track Feeder from your own toys or household materials. ...
![Tinker Toy Rube Goldberg Cone](https://www.playfulengineers.com/wp-content/plugins/pt-content-views-pro/public/assets/images/lazy_image.png)
Rolling Cone
Rolling means moving along a surface by revolving, or turning over and over, and without sliding. When a cylinder rolls, ...
![A ping-pong ball sits on a tiny rubber band (a rainbow loom, or hair elastic) at the end of a popsicle stick.](https://www.playfulengineers.com/wp-content/plugins/pt-content-views-pro/public/assets/images/lazy_image.png)
Popsicle Stick Catapult
A ping-pong ball sits on a tiny rubber band (a rainbow loom, or hair elastic) at the end of a ...
![A ball will sit patiently upon the half-circle at the end of a track](https://www.playfulengineers.com/wp-content/plugins/pt-content-views-pro/public/assets/images/lazy_image.png)
Patient Ping Pong Ball
A ball will sit patiently upon the half-circle at the end of a track. If you are making your own ...
![Gather Household Materials](https://www.playfulengineers.com/wp-content/plugins/pt-content-views-pro/public/assets/images/lazy_image.png)
Gather Household Materials
Suggested Materials List Surfaces: table, floor, shelf, counter, flat board, Tools: drill, ruler, scissors, hot glue gun, hole punchers, Toys: ...