Signs of the Seasons 
Collect and Exchange Phenology Data

What is Phenology?
Humans have long been aware of changes in nature that are influenced by weather and climate. Phenology is the term for the study of the timing of these seasonal changes in plants and animals. The amount of sunlight, which affects day length and temperature, is the main factor driving these shifts.

When students closely observe the natural world, record data, and notice patterns as the seasons unfold, they build a deeper understanding of seasonal change!

Each season, carefully observe the seasonal changes shown on the Phenology Checklist. Then pair up with a partner class and exchange the information you have collected. Using nature's clues, can you find where your partner is located? (Note: Don't confuse this Phenology Data Exchange with "Mystery Class", the 11 week worldwide search for ten secret locations around the Globe)

To Participate




  • Fall Phenology Checklist >>



  • Spring Phenology Checklist >>