Here are some good links for Second Grade:
Math
Making Change from $1.00
Math Space Shuttle
Farm Animal Sounds
Frogs and Toads
Life Cycles
Measure the bears
American Library Association
Temperature
BBC Science Sites
Coloring Fun
ABC Sign Language
Journey to Another Country
Money
Measurement
Plants
Social Studies
Learning Planet
Fun
Sesame Street
Proofreading
Cool Math 4 Kids
Math Save the Apples
Frog and Toad Web Quest
Mealworms
Yahooligans
Fun Typing
Ask Jeeves
Frogs and Toads II
PBS kids games
Build a Bear
San Diego Zoo Web Cams
Astronomy For Kids
The Solar System
Your Weight On Other Planets
Scholastic Activities
Panda Cam
World of Nutrition
Holiday Games
Gingerbread House
Measurement Tools
Solar System Games
Time Game
Time Game 2
Learning About Time
Computer Home Page