INVESTIGATION 1:  OBSERVING TREES
Click above for the entire investigation or below for individual parts.

INVESTIGATION 2:  OBSERVING LEAVES
Click above for the entire investigation or below for individual parts.

INVESTIGATION 3: OBSERVING WEATHER
Click above for the entire investigation or below for individual parts.

INVESTIGATION 4:  TREES THROUGH THE SEASONS
Click above for the entire investigation or below for individual parts.