We practiced measuring the circumference and diameter of trees today after Nancy Khan gave us a lesson about how to read the measuring tape. Ms. Khan is another scientist working here (we found out that we both went to the same college in Philadelphia!). She taught us how high up a tree's trunk it should be measured (1.3 meters, to be exact!).

We also learned about a tree's crown. As you might have guessed, these means its 'top'. The tallest trees in this forest (about 120 ft.) get all the sunlight and, when they have their leaves, they block the sunlight from the shorter trees, making those trees work harder. In addition to recording the size of the trees, we have to take notes about their crowns. Tomorrow we will be tagging every tree in a certain area of the forest (called a hectare) with a number tag so the scientists here can keep track of how they grow and change over time.