The order of the four activities in the physical activity pyramid from top to bottom would be:
1. Homework
2. Weight training
3. Soccer practice
4. Walking 30 minutes to school
The physical activity pyramid lists the least to most recommended activity options from top to bottom (refer to the attached image). Thus, homework would be on top, since, it involves sitting. Next would be weight training, since it is a strength activity, followed by soccer (a recreational activity), and finally, walking for 30 minutes.