Circle Cross Ranch K-8
San Tan Valley, AZ, USA

Online Contest:
Erase A Chalkboard
Online Division I - Ages 11 - 14 (Middle School)
Team Leader: Jocelyn Virtudes
Team Members: 5
Invitations: 0

What we're studying:
STEAM elective class

Our Team Leader's favorite quote:
"Plan your work and work your plan"

Why we think we should win:
We think we should win because we have spent countless hours, long school days, and sleepless nights working and fine tuning our project to make sure it constantly works. Also we all share a passion and love for engineering and winning would only do good for us, and fuel our fire even more.

Suggestion for next year's challenge:
To dial a landline/home telephone
Cut a piece of paper with scissors

Favorite Rube Goldberg video:

Greetings, Welcome to our domain. Here you will find our simple, but well-made project that completes the task of erasing a chalkboard. We hope you will find our "simple" machine intriguing.

Our Step List

1. marble falls down a tube and hits a car
2. car hits pendulum
3. pendulum hits a switch
4. switch activates a small wheel
5. the small wheel makes a marble,covered in clay, roll
6. marble pushes a car
7. car falls and hits a marble
8. marble falls on a switch
9. switch activates a wheel that makes a gear spin and shake the whole wood tower
10. marble on the tower falls into a tube and a hot wheels track
11. ball falls into another hot wheels track and pushes a lever down
12. lever activates a gear with an eraser on it and it rotates and erases the chalk on the chalkboard

Our Close-ups: Photos

Our Close-ups: Favorite Step

Our Close-ups: Task Completion

Our Machine Explaination and Walkthrough

Our Machine Run Videos

Machine Run #1
Machine Run #2