The research aimed to design a micro-training using the spaced/interleaved delivery model and to explore its impact on developing the skills of producing enhanced interactive books and cognitive flexibility of technical industrial education teachers based on the competency-based methodology. The research sample consisted of (40) teachers from technical industrial education based on the competency-based methodology at Zagazig Industrial Girls School No. (1), divided into two experimental groups. The research included two experimental treatments: the first experimental treatment used the spaced delivery model for micro-training, and the second used the interleaved delivery model. The research tools included an achievement test, an observation card, a final product evaluation card, and a cognitive flexibility scale. The results showed that the average scores of teachers in the first experimental group and those in the second experimental group differed on the achievement test, the performance-related observation card, and the product evaluation card. This was due to the primary effect of the different presentation modes for the micro-training, which favored the teachers in the second experimental group, who were taught using the interleaved delivery model. However, there were no statistically significant differences between the two groups' scores on the cognitive flexibility scale. The study recommended using micro-training with an interleaved delivery modes.