‘Chalk And Talk’ Or Technology. Do I Have A Choice? (Part Three)

Click here to read Part One and Two of this article

How useful is the online lecture? Used wisely and sparingly, online lecture can be used effectively to add another dimension to the classroom lecture. The students can view the presentation repeatedly either for revision or to get better understanding of the process. This is a great way to add value to the classroom teaching because very often the time to cover even the important aspects of the course is very limited. It is advisable that each online lecture be limited to 10 minutes. For a longer lecture then you can divide it into a few 10 minutes segment.

I’m teaching science and technology subject (food science/technology) – a subject which requires practical approach. While many food science/food processing concepts can be learned in a classroom they can be greatly enhanced by reaching beyond the walls of a lecture room. One cannot teach a course on food processing just by showing the flow chart and perhaps some pictures. Likewise, it is not sufficient to explain the principles and the step-by-step procedure in certain analytical method. In an ideal situation, it is best to teach a principle or concept by hands-on approach or by a direct demonstration. Imagine teaching a student about Lane-Eynon titration to determine reducing sugar. Being an empirical method and the reaction is nonstoichiometry, strict adherence to the procedure is critical in order to obtain good results. A video recording of the whole experiment can be made and critical steps of the titration can be highlighted. This would avoid students making unnecessary mistakes or systematic errors in carrying out analytical procedure. Similarly, when teaching food processing operation (e.g., extraction and refining of vegetable oils), each step of the process can be recorded in visual form and combined with narration. When I teach about production of snack foods, I can explain the sequence of the process and showing the picture and video clip of each stage of the process. These examples represent a different form of pedagogy (teaching methods) that can be fully utilised for effective teaching and eventually will greatly benefit the students.

The bottomline? Regardless whether it is ‘chalk and talk’, PowerPoint, Prezi, Twitter, or a group discussion, the most effective teacher brings out the best in every student at all times with all kinds of methodologies in order to motivate the students in every way. Period.

So let’s embrace technology but don’t forget the low-tech but time-tested chalk and board! 


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Chalk and Talk or Technolody. Do I Have a Choice? by Dr. Abd Karim Alias is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

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