Improving FLL Robot Game. Teacher Note. Introduction to task for Lifting
How should an instructor use this course when working with students and a group of students in school
- #436
- 06 Mar 2017
How should an instructor use this course when working with students and a group of students in school
Explanation and demonstration of the big task for the lesson.
The teacher should first explain the mission to the students: the robot should start from the base, marked in advance, to reach the next line, where the Moon is marked, to go round the Moon and return to the base.
Then the teacher should remind students that they have to accomplish the mission in small steps. Discuss with them what these steps might be.Students’ first task will be to accomplish the mission in which they have a starting and a final point set by the teacher. They should do that by trial and error until they find the correct settings of the robot. It all comes to trying out various settings for power and duration.
The same applies to setting the turn. Students will have to test both the angle and the duration of the turn.
Students should be careful about the sequence of the actions and, most importantly, should find a working solution on their own.
The teacher could make the task more complex: When the robot reaches the dark side of the Moon, it stops, makes a sound resembling the sound from a camera flash and then returns home.
The robot is horizontal. "I took the risk and it turned out great – I put a camera in the self-timer mode on top of the robot. At the start of the program I set a two-second delay, so that we could start the robot and install the camera on top". (Alex)
The teacher should tell students how robots turn in advance. He comments on programming the turn. The most obvious way is to use the tank block. The teacher should also focus on the steering block. You can also use the pictures in the m2 section.
For this lesson you will need a field, with some sort of marking for the Moon. This could be a pile of tires or a ball fixed to the floor somehow. You will also need to mark the pozition of the Earth where the robot will take off from. It could be a line of duct tape or a spacing between two floor tiles
We want you to know how things work, so that you should make some adjustments to the block.
Building instructions for an EV3 LEGO Mindstorms Dump Truck. The back of the truck can be tilted through controlling the medium EV3 motor so that the load can be dumped at a desired location. Also, the robot has a color sensor to determine the type of load it is carrying.
Using the On for degrees (rotations) option of the the Medium Motor Move Block you program the motor to rotate for the given number of degrees. However, sometimes is useful to program the motor to go to a given position, instead. To achieve that you can use this block. It takes the start position of the motor as 0 degrees. Then when you run the block with given number of degrees it just rotates the motor to that position. For exaple if your current position is -20 degrees and you run the block with 30 degrees, the motor will rotate for 50 degrees. But if your current position is 10 degrees the same program will rotate the motor for 20 degrees.
Third wheel experiments, changes in the robot, students could choose the task all by themselves. Make sure you have a lot of fun and students complete their tasks. Here is what you should know when conducting this class.