task: Hold the dustpan for the red cube, then the green cube, then the blue cube. Then empty the dustpan into the trash bin.


task: Hold the dustpan for the green cube, then the blue cube, then the red cube. Then empty the dustpan into the trash bin.


task: Hold the dustpan for the blue cube, then the red cube, then the green cube. Then empty the dustpan into the trash bin.