What are the phases shown in A and D called?

Miguel is making an obstacle course for field day.at the end of every sixth of the course,there is a tire .at the end of every third of the course,there is a hurdle.at witch locations of the course will people need to go through more than one obstacle?

In the reggio emilia approach, what method is used to assess children's learning

X•(-5)=60 someone plz me cause like yeah