With both vertical and horizontal axes, ElemenTree expands the visual access from 3 to 42 periodic features. An unbroken numerical sequence from 1 to 118 allows the learner to stay on track while tracing trends, similarities, or differences for any element. Blocks s,p,d, and f are integrated as a bisymmetrical motif for the tree structure. A detailed instruction manual explains the correlation between the 2-D periodic table and the 3-D ElemenTree. It is a useful educational and research tool for high school through college level chemistry and affiliated fields. ElemenTree is a user-friendly, hands-on teaching aid. The kit contains an ElemenTree model, instruction manual, and book-size carrying case.