This resource is a set of 300+ Warm-Ups, Bell-Ringers, or Exit Slips for 6 different units of study. This bundle covers: Introduction to science, cell structure and function, photosynthesis, respiration, cell division, ecology, genetics, DNA, RNA, protein synthesis, evolution, population genetics, the history of life on Earth, and classification. These activities are perfect for the first few minutes of your class. Both printable and digital versions are included. This bundle includes the foll