Assessment: EV3 - The Wave
Assessment Type:
Challenge
This lesson ties together all the learning to date. The students must design/modify a robot capable of precise and repeatable forward and reverse movement. Students must then design and program a choreographed group performance. This will require the students learning to use the Wait-for-Time block.
The Wave Challenge
Start by showing students this example of The Wave Video. for NXT Robots
Walk students through the following steps:
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Have student develop the overall plan and patterns for their performance
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The pattern of the performance in the video is only a suggestion, students may develop their own
- Note: The video example coordinates the start using the NXT sound sensor - since the EV3 does not have sound sensor, how will student coordinate the start? Pressing the Brick button is the easiest, but you may want to add a Wait-for-Time block so students can step away perform things start moving.
- Break the patterns down into individual movements
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The pattern of the performance in the video is only a suggestion, students may develop their own
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Have students develop a means of choreographing the movements of each robot
- A table or spreadsheet is useful for this step
- Numbering each robot with Post-Its helps this process
- Coordinate the movement of each robot
- This The Wave Planning Template may help coordinate the students ideas
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Have students analyze practice runs:
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Identify sources of imprecision
- Physical differences between robots such as battery level, friction, rigidity of structure, etc.
- Software differences such as errors in programming, start/stop coordination, etc.
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Identify sources of imprecision
- Have students create a video of their final performance
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Consider whether robot moves should be controlled by rotations or time
- Rotations will have the robot move the same distance, but they become less in sync as the performance progresses
- Time may cause robots to move different amounts, but changes in movement will reamin better in sync
Note: This challenge may be revisited to incorporate subsequent skills such as sensors, turning, third motors/appendages, loops, etc. Eventually, "The Wave" will evolve into choreographed dancing robots.
Education Level:
Middle School
High School
Focus Subject:
Robotics Software
