Why do soybean plants that are planted weeks apart in the spring mature simultaneously in the fall? Four independent activities cover the history of phytochrome research, scientist collaboration, the electromagnetic spectrum, and...

The middle of the data is important, but what about the rest of it? The lesson shows learners the importance of the range, quartiles, and extreme values. Pupils practice finding each of these values from given data sets.

Considering using The Sun Also Rises as a whole-class or book circle choice? Check out this overview and interesting interpretation of Hemingway's tale.

Scroll below the Fall Color Report on this site for information from the Wisconsin Department of Natural Resources that easily explains why and how leaves change color and why they fall. There are colorful illustrations and appropriate...

Why do plants have leaves? Are there leafless plants? Why do leaves fall in the Fall? Discover the answers to these questions and many more as you peruse this site.

Coupled with a beautiful photo gallery, the National Arboretum sets out to explain the science behind why leaves of deciduous trees change their color in the autumn months. While temperature effects the colors, learn here what happens in...

This brief site describes the changes that take place within leaves and the environment which result in the colors we observe in Autumn.

Simple, but thorough explanation of fall colors in deciduous forests. Where the color comes from and how trees lose their leaves.

Fall begins with the autumnal equinox, usually around September 22 or 23. The equinox is the time of the year when we have equal length of night and day.

Follow the suggestions here for a fall leaf cleanup in your yard.

Have you ever wondered what is going on under the snow? Why leaves change colors? How migratory birds find their way? Find the answers and check out these ideas on how to explore, discuss, or celebrate based on our four seasons!