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Name of Activity Save Mr. Bob
Author STOMP
Keywords wall, stop, car, sturdy, safe, NXT, EV3, program, sensor, motor, touch
Subject LEGO Robotics
Grade Level 4
Time 1 Hour Total, 2-3 Hours Total
Brief Description Mr. Bob, a terrible driver, needs to have a safe vehicle which stops when it hits wall. The kids made these vehicles sturdy, then added a chair for Mr. Bob with protection around it, and then added a touch sensor to the front the vehicle to stop the car when the sensor is touched.
Lesson Objectives: Introduce kids to programming. We also did the “I am a robot” activity before this since it was our first class using computers to program NXTs.
Learn how to use sensors and tell the robot what to do after a sensor is triggered.
Materials Needed: NXT kits, computers, Lego guy (Mr. Bob)
Preparation and Set Up: We borrowed laptops from the Josiah Quincy library and found the ones with NXT programs already downloaded on them.
Knowledge Background How to build a sturdy car. Know that trial and error, remaking and breaking, are key parts of the engineering process needed for this activity. Testing the vehicle is important as well.
Procedure We first split the room into two and did the “I am a Robot” activity to introduce programming. Then we showed them on a computer how to program a car to go when a touch sensor is pressed on it. Then we split them up into groups of two and allowed them to build off of the sturdy vehicle they had built for Mr. Bob last week. They then attached a sensor to the front, programmed and tested their vehicle out.
Extensions: Show them how to connect the sensors to the front of the vehicle since many of the kids had trouble with this.
Previous Activity (if applicable) Sturdy vehicle
Umbrella Unit/Curriculum (if applicable) Animal robots- moving without wheels
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