Rain Forest Field Trip (All Grades)
Scholastic's Internet Field Trip for rain forests provides resources, background information, and lesson plans for teachers who are planning a rain forest unit.
http://teacher.scholastic.com/fieldtrp/science/rainfor.htm

Rain Forest Alphabet Animals (All Grades)
Have students create a mural, a class book, or a newsletter of the Amazon rain forest animals using this lesson plan. Projects can vary according to Grade Level.
http://www.eduplace.com/rdg/gen_act/animal/amazon.html

Rain Forest Decorations (Pre-K-1)
Create rain forest animals for your classroom using these lesson plans.
http://www.eduplace.com/rdg/gen_act/insect/b_fly.html
http://www.eduplace.com/rdg/gen_act/insect/creepy_c.html

Bugs! (Pre-K-1)
This lesson can be used as an activity to compare and contrast the bugs in a rain forest to the bugs in their own homes and neighborhoods.
http://www.ed.gov/pubs/parents/Science/bugs.html

Trees Trees Trees! (2-3)
In this lesson, students increase their awareness and knowledge about trees. Extension activities are included.
http://ericir.syr.edu/Virtual/Lessons/Science/Biological
/BIO0062.html

Thematic Rain Forest Unit (2-3)
These sites provide lessons, resources, and evaluation methods for rain forest units.
http://kids.osd.wednet.edu/marshall/homepage/educational.html
http://www.stark.k12.oh.us/units/rainforest/
http://web.isbe.state.il.us/mshride/rainfles.htm

Rain Forest Animals and Ecology (4+)
In this unit, students will learn about rain forests and planet ecology. Resources, book activities, and a list of rain forest organizations are included.
http://www.libsci.sc.edu/miller/Rainfor.htm

Multiple Amazon Activities (4+)
Lesson plans about the Amazon Basin incorporating poetry, computer software, and literature are described at this site. Material can be modified to meet different age groups.
http://www.educ.wsu.edu/esl/Amazon.html