Each year a tree’s growth ring has two parts; one is wide and light colored, and the other is narrow and dark. This grows during the wet spring and early summer when the tree has a lot of sap, and the cambium cells giving rise to the trunk growth are large and thin walled.
As the summer winds down and the transition to the cooler autumn occurs, the tree’s growth rate slows.
The Farmers Market returns to Rockefeller Center Wednesday, July 26 through September 1, Wednesday - Friday each week from 8am - 5pm.
Stop by to pick up specialty products from regional farms including fresh produce, meat, eggs, flowers, baked goods, cheese, wine and more!
Tree-ring analysis requires observation and pattern recognition.
Flynn And Rapunzel are celebrating the day they have first met right...
Let's have some fun with this fresh new game for Valentine's, where Elsa and Jack need to prep up for a romantic date.
This Lab-Aid uses highly motivating, easily performed activities. Materials in this kit, designed for 30 students, are reusable.
This version of our tree ring simulation replaces an earlier version that used the Flash plugin.