Thymio II, a robot that grows wiser with children

Thymio II is a small robot developed for education. It aims at offering a wide public the possibility to understand the basics of robotics and programming. To achieve this, it aims at being appealing to a large age range and serve as a medium for several types of activities. In this study, we tested it in five different workshops of the EPFL Robotics Festival with various activities. The workshops target different age groups and the participants can control the robot via different means: built- in buttons, graphical programming and text programming. At the end of the activities, participants were asked to fill a short survey to give their impressions about the robot, their appreciation of the tasks and their motivations to take part. We could show through this feedback that ThymioII appeals to young children as much as to teenagers, to both girls and boys, and allows them to have fun and learn new things.

Thymio

Fanny Riedo

Technology is now an important part of our lives. We often see robots cited as the future of education, and reports of their imminent entrance in schools. New projects create buzz in the media and online, but when we look at the actual situation, very few robots are currently used in education, and most of the time, the platform used is the Lego Mindstorms. Why so little diversity? What do robot actually bring to the learning experience? How can we design good educational robots? Hopes are that they bring additional motivation to pupils. Since the use of robots is fun, the learning is supposed to become easier. Robot projects and activities are also expected to foster thinking skills, collaboration, and creative spirit. Finally, there is a need to educate people on technology for two reasons. The first is to break the "black box" image they have of technology, and the second is to encourage them into technical careers. Thanks to the Swiss National Centre of Competence in Research Robotics (NCCR Robotics), we could develop some innovative concepts in educational robotics, and implement one such pedagogical tool. We designed a small wheeled robot with many sensors, and LEDs making its internal state apparent to the user. A simple, white look makes it a neutral base for creating one’s own application, for all age and gender groups. Different user interfaces allow to make it accessible to everybody: • Pre-programmed behaviours that demonstrate its different possibilities • A Visual Programming Language (VPL), without text and based on event-action pairs • The Aseba script language (text-based), with a comprehensive development environment to accompany and inform the user The resulting platform, Thymio II, is completely open-source and open-hardware. It was mass-produced and commercialised at a low cost. This gave the opportunity to evaluate the public’s response to it. We could assess that the robot design is well received and appreciated by different age and gender groups. It seems particularly popular with girls. We analysed the expectations of the different age categories and proposed activities that fitted their specific needs. We could also validate that users of Thymio II learn notions of programming, understand essential concepts such as what sensors are, what is the relationship between the robot, the computer, and the programming environment. With the VPL, they could quickly grasp the meaning of events and event-action pairs. We realised that in spite of the interest it generated, the robot was not used much at home or in schools. We think that there is a need for more guidance and that parallels should be drawn with e-learning for the use at home. In schools, we observed that teachers who use robots are pioneers, who invest time and sometimes money into new technologies out of personal interest. The others do not feel strongly against robotics but are probably discouraged by the lack of institutional injunction, appropriate training, budget, and ready-to-use pedagogical materials. At the end of this work, we conclude by giving a set of guidelines, based on our experience, for the design of educational robots. This project demonstrated very promising results and we believe that it can be a first step toward renewing teaching habits.

EPFL2015

Assessing Interaction Dynamics in the Context of Robot Programming by Demonstration

Brenna Dee Argall, Aude Billard

In this paper we focus on human-robot interaction particularities that occur during programming by demonstration. Understanding what makes the interaction rewarding and keeps the user engaged helps optimize the robot's learning. Two user studies are presented. The first one validates facially-displayed expressions on the iCub robot. The best recognized displays are then used in a second study, along with other ways of providing feedback during teaching a manipulation task to a robot. We determine the preferred and more effective way of providing feedback in relation to the robot's tactile sensing, in order to improve the teaching interaction and to keep the users engaged throughout the interaction.

Springer Netherlands2013

Augmented Robotics for Learners: A Case Study on Optics

Wafa Monia Benkaouar Johal, Amaury Robert Dame, Stéphane Magnenat, Francesco Mondada, Olguta Robu

In recent years, robots have been surfing on a trendy wave as standard devices for teaching programming. The tangibility of robotics platforms allows for collaborative and interactive learning. Moreover, with these robot platforms, we also observe the occurrence of a shift of visual attention from the screen (on which the programming is done) to the physical environments (i.e. the robot). In this paper, we describe an experiment aiming at studying the effect of using augmented reality (AR) representations of sensor data in a robotic learning activity. We designed an AR system able to display in real-time the data of the Infra-Red sensors of the Thymio robot. In order to evaluate the impact of AR on the learner's understanding on how these sensors worked, we designed a pedagogical lesson that can run with or without the AR rendering. Two different age groups of students participated in this between-subject experiment, counting a total of 74 children. The tests were the same for the experimental (AR) and control group (no AR). The exercises differed only through the use of AR. Our results show that AR was worth being used for younger groups dealing with difficult concepts. We discuss our findings and propose future works to establish guidelines for designing AR robotic learning sessions.

IEEE2019

Thymio

Fanny Riedo

EPFL2015