1. **Stating the problem:** We want to find the total number of students attending the theme day. 2. **Given data:** - There are 16 groups with 13 students each. - There are 14 groups with 12 students each. 3. **Formula used:** Total students = (Number of groups 1) \times (Students per group 1) + (Number of groups 2) \times (Students per group 2) 4. **Calculate each part:** $$16 \times 13 = 208$$ $$14 \times 12 = 168$$ 5. **Add the two results:** $$208 + 168 = 376$$ 6. **Answer:** There are **376 students** attending the theme day.