Beverage Powder: A STEM Education Project in PTEC Student Teachers
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Abstract
Worldwide economic growth has been consistent with technological advancements in the labor market. In this sense, STEM education is very significant in strengthening the ability of students to have the appropriate skills for the needs of the 21st century. Thus, this project intends to process agricultural raw materials such seasonal fruits into completed products that can be preserved for a long time in daily life and enhance the growth of local agricultural products. The STEM learning activity will be developed based on Sutaphan and Yuenyong (2019) which consisted of 7 stages including (1) Identification of social issues, (2) Identification of potential solutions, (3) Need for knowledge, (4) Decision-making, (5) Development of prototype or product, (6) Test and evaluation of the solution, and (7) Socialization and completion decision stage. As a result, many beverage powders are made using raw materials such as oranges, lemons and mangoes. This beverage powder can also be further processed using standard equipment such as mesh mixers, dryers and grinders to a fine powder, which can then be used as a raw material for making candy and ice cream. When kept and handled appropriately, this powder can last up to a year without the need for artificial preservatives. Regarding the experiment, analysis, evaluation and reflection, there was found that the delicious beverage powder can be composed of fruits, vegetables, flowers mixed with a little sugar, salt and lemon powder then dried under the sunlight or dryers. The study will issue on student teachers’ experiences in integrated STEM knowledge throughout these activities. Furthermore, student teachers could apply this approach in their actual classes in the future.
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