STEM has been integrated into science curriculum with recent changes. However, teachers are in need of resources to effectively apply STEM in their classrooms. This study aimed to prepare STEM activities and to find out the students' opinions about these activities. Case methodology was used. First, 5 activities were developed by the researchers and they were implemented in the classroom over a 4-week period. Then, the students were asked to prepare an activity related to the unit standards to be implemented in class. Semi-structured interview technique was used to obtain the students' views about STEM activities. The students had fun and took an active role during the STEM activities. However, the students had difficulty in adjusting the time during the implementation process. The students wanted similar activities to be implemented in other topics in science lessons. Based on the findings, we suggest that more STEM activities are developed.