Tree Leaf Identification Key – Online Shape, Margin, Arrangement
Select leaf characteristics (simple/compound, smooth/toothed) to identify common North American trees.
UD5 Toolkit
Select leaf characteristics (simple/compound, smooth/toothed) to identify common North American trees.
Answer yes/no questions about color, hardness, streak, luster to narrow down common rocks and minerals.
Browse a collection of common bird calls. Play short audio samples to identify birds you hear. Educational static data.