Discussion about what a gear wheel is and how it is used

As mentioned earlier, today the students will learn more about gear wheels and gearboxes. Open a discussion about why we use gear wheels in vehicles and machines.

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30 Mar 2018
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Teacher's Note, Classes with students

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You can use the following questions as a starting point: "What is different in the drive of the robot? Are the motors directly connected to the treads?". When you conclude that gear wheels are used in the robot, you can continue with the simple question - "Why?". Why do we use gear wheels and what is their role in the current scenario? Let the students comment for a while and make sure that each and every student has stated their opinion. Afterward, continue with the next tutorial and together learn more about gear wheels.

Note that in the next tutorial there is also a video. Watch the video before the start of the lesson and use parts of it to illustrate the theory. However, we advise you not to let the students watch it because playing a video asynchronously on five different machines will cause chaos in the group, unless they all have headphones.

Courses and lessons with this Tutorial

This Tutorial is used in the following courses and lessons

Level B2. "Military Technologies". Robotics with LEGO

The firfth level of the Robotics with LEGO curriculum for students in second, third or fourth grades.

The students build many robots with chain-treads. The Color Sensor is introduced and robots use it to recognize the colors of the objects around them. Students learn about gears, basic gear constructions, and their application. Robots now can stop on a black line and can follow a line using their sensor.

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Lesson 3 - Tooth wheels

Introduction

Today we will once again construct a tank. The robot will use more parts than the one from the previous lesson and most importantly it will use gear wheels. We will dive into the world of physics and learn more about gears and how to use them.

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Robotics with LEGO - Level 1.5 - Spy games

The second level of the Robotics with LEGO curriculum for students from fifth to twelfth grades.

Students build multiple robots with thread chains and become familiar with the physical concepts of momentum and center of gravity. The concept of gears, their use and basic constructions involving gears are studied.
The new concept of "condition" is introduced in programming. Robots are becoming smarter as they can make complex decisions on their own. "Spy robots" follow their targets and avoid being noticed. This level introduces the light sensor which the robots use to recognize the colors of the objects they are looking for. Robots can stop on a black line and follow a route marked with a colored line on the floor.
The spy's most complex mission in the end of the level is to turn into a sumo wrestler and defeat any other robot in the ring.

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Lesson 5 - Tank with Gear wheels

Returning feedback to students is important. We try to return feedback constantly in the classes. You should also try to return feedback in a structured way - in a form of a digit. Today you will have to grade your students following this article.