The purpose of the study is to investigate pre-service teachers' competencies and their perceptions of necessity about using practical tools for content development. The study was designed using pre- and post-test experimental design method. The study group consisted of 170 pre-service teachers at a public university in Turkey. The Practical Tools for Content Development (PTCD) scale was used for data collection. Pre-service teachers had been trained about practical tools for 14 weeks during the Computer II course in spring semester. For the data analysis; descriptive statistics, independent t-test, dependent t-test and single factor variance analysis (ANOVA) methods were applied. It was observed that the competency levels of pre-service teachers increased from medium to high. A slight decrease was observed in pre-service teachers' perceptions of necessity. No significant differences were observed in competency levels of pre-service teachers depending on gender, department and daily internet use variables. Female participants' level of perceptions of necessity was significantly higher than the the males, whereas there was no other significant differences. It can be concluded that Computer II course might have an important role to improve pre-service teachers' competencies and skills on the use of practical tools for content development.