This paper will provide several examples of science and mathematics integration: navigation/map-reading, ecology/ecosystems/population growth, and chemistry/molecular structures. This paper underscores integrating STEM subjects with problem-based learning with technology such as video/computer simulations/programming/coding and the dynamic free online software GeoGebra. The paper suggests some GeoGebra-based connections to the science and math that is taught and a way to connect the disciplines with technology. Science involves and uses mathematics, and both subjects involve problem solving, and math is the tool that science uses. Subsequently, integrating science and mathematics using problem-based learning with technology might be a way to improve science and mathematics instruction while building confidence for STEM. Recommendations for STEM teachers are made along with some GeoGebra illustrations.