Ed Heads: simple machines http://edheads.org/activities/simple-machines/
Optical Illusions http://www.optillusions.com/
more COOL optical illusions http://www.coolopticalillusions.com/
interactive science puzzlers http://sciencespot.net/Pages/classpuzzle.html
informational topics http://www.kidsclick.org/
Study Island http://www.studyisland.com/
National Geographic http://www.mywonderfulworld.org/index.html
interactive skills:on line math, puzzles etc http://www.internet4classrooms.com/skills_5th_original.htm
Brain teasers AIM http://www.aimsedu.org/PUZZLE/index.html
interactive math for fifth graders http://www.edina.k12.mn.us/creekvalley/staffdev/Internet%20Sites/studentsites.htm
WOW -fabulous interactive skills for 5th graders http://www.indianhillselementary.net/sites/5th.htm
challenge yourself to math fun http://www.321know.com/equ.htm
everything you want to know about space and more http://www.geocities.com/enchantedforest/tower/1217/space.html
interactive math games http://cemc2.math.uwaterloo.ca/mathfrog/
HArcourt Reading practice http://www.harcourtschool.com/menus/trophies/activities/reading_skills/gr5.html
Math algorithms http://www.swsd.k12.pa.us/baresvle/MathMaterials/alternat_algor.htm
Fun Brain Science Periodic Table http://www.funbrain.com/periodic/index.html
Science facts about the body http://yucky.discovery.com/noflash/body/index.html
owl pellet activities, skeletal systems, virtual dissection http://www.kidwings.com/teacher/owlpellets/index.htm