| First attempt. |
| Roll and bounce. |
| Team work. |
| Roll and drop through a hole. |
| Loops. |
| Trying to change the direction of the marble. |
| Scientists at work. |
| Success! |
| 5 groups. 5 dedicated spaces. |
| Making a round loop is harder than you think. |
| Falling dominoes cause a chain reaction. |
| Gravity pulls the marble down. |
| A series of chain reactions. |
| The marble will roll and bounce off of the drum. |
| Experimenting with balloons. |
| Almost ready! |
| Almost done. |
| Testing in progress. |
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