The Computer Science collection of lessons includes computer science concepts integrated with math and/or science content. The lessons are designed for math, science, or STEM teachers to use seamlessly address math, science, and computer science standards in their classroom. To provide comprehensive coverage of concepts, lessons are grouped into units of study. The units incorporate skills based on algorithmic math and science processes and culminate in the use of coding to highlight the students’ math and/or science knowledge. The units utilize Scratch to introduce programming.