The time frame can vary significantly between groups. This is partly because first graders have different levels of endurance, and partly because some groups may become more deeply engaged in certain activities. In the first case, it’s perfectly fine to split the sessions into multiple parts and go outside more frequently or plan the program from the start with longer breaks between activities (free play, meals, changing locations, etc.).
If the children want to immerse themselves more deeply in a particular activity, we should allow them enough time and definitely avoid rushing them.
Ideally, these sessions can be part of a whole-morning or even full-day program, such as a field trip. Reflection and summarizing can take place on site, but feedback can also be postponed to the following day in the classroom setting, where there is an opportunity for discussion and drawing the experiences or “photos.”