This poster highlights the use of LEGO Spike in elementary schools, specifically in third and fourth-grade classrooms during project days, focusing on early experiences in computer science education.

We share practical insights and best practices gathered from implementing LEGO Spike as a tool for engaging students with no prior experience in computer science. The hands-on activities encourage collaboration, creativity, and critical thinking among young learners.

Additionally, we examine the direct impact of these experiences on students' STEM (Science, Technology, Engineering, Mathematics) competencies, including teamwork and frustration tolerance. Feedback and assessments indicate significant improvements in problem-solving skills, logical thinking, and the ability to work collaboratively. Students also demonstrate enhanced resilience in overcoming challenges during the activities.

Moreover, we explore how these experiences shape students' perceptions of computer science careers, revealing an increased interest in STEM fields and the profession of computer scientists.

This poster aims to provide educators with effective strategies for integrating LEGO Spike into their curriculum, fostering early interest in technology and innovation among elementary school students.

Keywords: Education, elementary school, Lego Spike, first Coding.