LEGO MINDSTORMS EV3

We start by waiting to detect an object with the ultrasonic sensor and the wait block. This is not that important for the lesson but adds to the ambush-thing. Then, we program the motor to move for half a second as it works faster that way, although we can achieve the same result with more seconds as well. Finally, we check whether the motor has turned less than 160 degrees in order to detect the grabbing action. You can also tell your students to never use = in logical operations as sensors are not very accurate and sometimes they skip values. Be careful with the switch port!

The first task allows for choosing a claw which means the settings for the second block can be replaced with these for a medium motor.

Here are the programs for this robot: https://www.fllcasts.com/programs/tvznid-program-for-the-ev3-scorpion-robot-antares

We should all know how to follow a line in the most simple way possible. If the sensor detects that it is not above a line, the robot turns to the line. If the sensor detects that it is over the line, it turns away from it. But let's do this with a Switch Block. 

Here we have included additional information on the subject you could share with your students :)

Wikipedia: Plastic pollution: https://en.wikipedia.org/wiki/Plastic_pollution
National Geographic: https://www.nationalgeographic.com/magazine/2018/06/plastic-planet-waste-pollution-trash-crisis/
Both sources deal with plastic pollution and the way it affects the planet but the survey conducted by National Geographic is much more sophisticated.

Some videos on the subject (pay attention that they include disturbing images:
This video includes almost all facts related to plastic pollution: https://www.youtube.com/watch?v=RXRMuorEAVI
This is a TED Talk session with a person who has proposed an interesting social solution to the problem and has an intriguing point of view: https://www.youtube.com/watch?v=mT4Qbp89nIQ
This video is about scientists who have discovered an enzyme which can be used to break down some commonly used plastics and includes a lot of complex terminology: https://www.youtube.com/watch?v=aVivNsfifjE

Last part of the series. The final touch of the program makes sure that it works and is following the line with the LEGO Mindstorms EV3 Color Sensor in a smooth and fast way. 

In this lesson, we are going to use pre-made MyBlocks. Do you know how to find them?

(available in Bulgarian)

In this video we discuss the durability of the construction of LEGO robots and how do we make them more durable.