Journal Articles (All Issues)



Angelo B. Dalaguit

Keyword Lesson Guide, Electronics Technology, Pre-Post design, Voltage Time Delay


The study used a pre-post design in order to assess the efficacy of the instructional guide using the fabricated voltage time delay device. Pretests and posttests were conducted to evaluate the performance of the students before and after the discussion and demonstration. The reliability of the pre-test result showed doubt because this was attributed to the prior knowledge of the students. The students were not able to study the topic yet. Right after the pretest, using the device for instruction the result of the reliability of the post-test was 0.75 with the interpretation of good. This means that the test instrument was good for a classroom test, though, there were probably a few items that could be improved. For the test, significance using the t-test the computed value was 3.689 which was bigger compared to the table value at 0.01 and 0.05 levels of significance therefore the decision was significant. This means that the null hypothesis of no significant correlation was rejected. The researcher failed to provide sufficient evidence to accept the null hypothesis that there was no significant correlation between the pretest and posttest given to students using the lesson guide. It was established that the lesson guide using a voltage-time delay device was valuable for electronics instruction. This guide helps the students to understand and fabricate a device that can protect against electrical surges or spikes for the different electronics and electrical-consuming devices. This equipped or enhanced their knowledge and skills in both electronics and electricity they need when they will graduate from their course. Therefore, was safe to recommend the use of the guide for instruction.


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Vol. 40 No. 12 (2021)