This warm-up activity focuses on developing fluency in skip-counting by 2s and 3s. The objective is to help students practice and enhance their ability to recognize and form patterns associated with these sequences. It includes activities such as filling in missing numbers in sequences, counting visual groups of objects, and engaging in partner practice to verbalize the skip-counting patterns. Additionally, students are challenged to compare the patterns of 2s and 3s, identify the differences, and determine commonalities, promoting a deeper understanding of proportional relationships.