You certainly have picked a delightful day to be outside. I try to get my students out of the schoolhouse as often as I can. After we've done our recitations in the morning, if the weather cooperates, we are off with our pails, slates, and insect nets to learn what treasures there are. First and foremost, you need to have an accurate knowledge of every inch of ground over which you are going to take your students, so you know what it will yield to them of interest and information. You also need to design your study to fit the season at hand.
Summer hosts an abundance of flowers, insects, trees, and seeds to be identified.
And lots of items to be brought back to the classroom to study when the winter air is too crisp to venture out in for long. Don't forget your good temper and a trusty whistle though. Nature offers a wealth of resources to mankind. Why our existence today is largely thanks to the resources mined from this forest. The wonderful thing about forests is that, managed wisely, they can continue to provide resources for generations to come.