Grab and Release
Build a motorized tool to move objects.
- Read through the student material in the EV3 Classroom App.
- Collect some information about motorized tools and how they’re used in robotics.
- To complete this lesson, the students will have to have built the Driving Base model, which will take about 30 minutes.
2. Engage (5 Min.)
- Use the ideas in the Ignite a Discussion section below to engage your students in a discussion related to this lesson.
- Split your class into pairs.
3. Explore (20 Min.)
- Have each pair of students build the Cuboid, and the Medium Motor and Ultrasonic Sensor extensions for their Driving Base.
- Give the students some time to use the programming stacks provided to explore how this motorized tool can be used to move the Cuboid.
4. Explain (5 Min.)
- Facilitate a discussion about the key features of the Medium Motor extension and its limitations.
5. Elaborate (15 Min.)
- Challenge your students to program their Driving Base to use the Ultrasonic Sensor to stop near the Cuboid and then lower its arm to collect and return the Cuboid.
- Don’t forget to leave some time for cleanup.
- Give feedback on each student’s performance.
- You can use the assessment rubrics provided to simplify the process.
Ignite a Discussion
Motorized tools can be attached to robots to enable them to perform different tasks. Some are very specialized and optimized for a single purpose, whereas others are more versatile.
Use these questions to engage your students in a discussion about ways robots could use motorized tools:
- What tasks should a motorized tool designed to handle objects be able to do?
- In which situations would you choose a highly optimized motorized tool?
- In which situations would a versatile motorized tool be better?
Simplify this lesson by:
- Allowing the students to place the Cuboid at a known and fixed distance
- Spending extra time explaining how to use the Ultrasonic Sensor
Take this lesson to the next level by:
- Asking your students to modify the Medium Motor extension to move objects of different shapes and sizes
- Challenging your students to create their own Driving Base tools
Teacher Observation Checklist
Create a scale that matches your needs, for example:
- Partially accomplished
- Fully accomplished
Use the following success criteria to evaluate your students’ progress:
- Students can use a motorized tool to move and release an object.
- Students can use the Ultrasonic Sensor to determine when to activate the motorized tool.
- Students can expand their program to return an object to the starting position of the Driving Base.
Have each student choose the level that they feel best represents their performance.
- Bronze: I’ve used a motorized tool to move and release the Cuboid.
- Silver: I’ve used the Ultrasonic Sensor to activate a motorized tool at the right time to move and release the Cuboid.
- Gold: I’ve used the Ultrasonic Sensor to activate a motorized tool at the right time and have moved the Cuboid to the starting position of the Driving Base.
- Platinum: I’ve used the Ultrasonic Sensor to activate a motorized tool at the right time and have moved different objects to the starting position of the Driving Base.
Language Arts Extension
To integrate language arts skills development:
- Have your students prepare and deliver a presentation about how their Driving Base uses the motorized tool to complete tasks, highlighting the tool’s strengths, components used, etc.
Note: This will make for a longer lesson.
Students who enjoyed this lesson might be interested in exploring these career pathways:
- Information Technology (Computer Programming)
- Science, Technology, Engineering & Mathematics (Science and Math)