Look for the name of your activity. The links you need are under it.

A Reason to Build Walls
"Mending Wall"
Lucca, Italy
Derry City, Ireland
Western Wall, Israel
Berlin Wall, Germany (Wikipedia)
The Berlin Wall
"The Wall" - The National Vietnam Veterans Memorial in Washington, D.C.
Great Wall of China
Hadrian's Wall, Scotland

An Ordinary Hero
My Hero 

Animal Rights
What are Animal Righst?

Animal World
Kids' Planet (click on Get The Facts)
WWF - Threatened and Endangered Species 
EnviroLink Home Page 

Are Fairy Tales, Legends and Myths Meant Only for Young Children?
Whootie Owl's Stories to Grow By
Stories in a Nutshell 
Animals, Myths & Legends 

Bedtime Stories
Bedtime Story

Biography
Biography.com
World History - Hyperhistory

Birthdays Are Special 
Celebrity Birthdays
This Day in History - The History Channel
Famous Birthdays

Buildings Are Tall 
World's Tallest Buildings

Bullying
Stop Bullying

Camping in the Negev
EcoTourism

Can You Keep a Secret? 
How to Keep a Secret 

Computer Crime and Cybercrime
Cybercitizenship

Compare Two Countries
NationMaster

Dangerous Jobs
Dangerous Jobs
10 Most Dangerous Jobs 2015

Do We Really Need All These Products?
What Is Consumer Fraud Reporting?

Did It Happen in Your Lifetime? 
Hyper History

Food, Food and More Food 
Food by Country

Food and Films
The Internet Movie Database
The Internet Movie Script Database 
The British Film Institute
Greatest Films Site
Scope - a fully refereed online journal of film studies edited by staff and postgraduate students within the institute of Film Studies at the University of Nottingham. See, in particular, the articles archive, the book reviews, and the booklist (bibliography).
The Online Film Dictionary

Fun at the Museum
Madame Tussaud's - London, England
The Children's Museum - Boston, USA
The Natural History Museum - London, England
Hands On Children's Museum - Olympia, Washington, USA
Institute and Museum of History of Science - Florence, Italy
National Aquarium of Baltimore - Baltimore, USA
Ontario Science Centre - Toronto, Canada

Funny Crimes
Dumb Criminals 

Gangs and You
Gangs and Kids
Gang 101

Headlines Don't Always Tell the Story 
Plain Language Humor: Funny Headlines
Witty Quotes Haven: Funny Headlines
Innocent English - Funny Newspaper Headlines

Hoax or Real?
Museum of Hoaxes

How Much Should I Eat?
How Much Food Should I Eat Today
Eat More Fruit and Vegies

Is There Something Hidden in the Food Label?
The Food Guide Pyramid
Teens Health – Vitamins and Minerals
Dietary Guidelines: Build a Healthy Base
My Food Plate Guide

Inventions - Scavenger Hunts 
Activity 1 - Children of Invention
Activity 2 - Inventions: Food
Activity 3 - Timeline of Everyday Inventions
Activity 4 - Invention or Discovery

Job Search 
Job Search UK

Just for Fun
Brainboosters
Shopsafe.co.uk 
Thewhyfiles
Internet Safety - Dating Online
Terror teens named and shamed 
'Terror triplets' walk free from court 
Mobile phone thief gets four years

Kids Can Be Ecologists
Kids Do Ecology

Kids Invent
10 Great Inventions Dreamed up by Children

Life in the Age of Global Warming 
WWF Climate Change
Global Warning Signs 
EPA Climate Indicators
NRDC: Consequences of Global Warming

Mobile Phone Etiquette
Wired News: She's Gotta Have It: Mobile Phone
Wireless firms look to tap teen market
Mobile Phone Etiquette
Opinion: Table for two, mobile phone or nonmobile phone?

Modern Communication Acronyms 
Fun with Words 

Murphy's Law 
Murphy's Law

Music Reflects the Times
The History Channel
Hyper History
National Museum of American History

My Birthday in History 
This Day in History - Infoplease.com
The History Channel

One Photo - A Thousand Words 
National Geographic - Daily News

Relief Organizations
Humanitarian aid organization
How to Give a Persuasive Speech
Persuasive Speech Tips and topics
Write Out Loud – Writing a Persuasive Speech

Saving Animals 
ASPCA - Animaland®
ASPCA

Slanglish
Urban Dictionary

Surviving a Disaster
Ruth Becker Story
Rescuers from the Holocaust
Dolly McTigue Survival Story - an interview with a ship survivor
Amy Knowlton: Surviving a Plane Crash - an interview
Fire: Lise Bohannon
Boxing Day tsunami: 'I survived nine days alone in the Indian Ocean'

Sports Treasure Hunt
Factmonster - Sports

Teenage Crime
Frontline: Juvenile Justice 

The Life of Crime Isn't for Everyone 
Funny Real Life Crime Stories

Today's Horoscope and the Newspaper 
Infoplease
Your Weekly Horoscope 

To Blog or Not to Blog
Online Guidelines for Student Blogging, Commenting, and Personal Safety

Travel Brochure
Mapquest
Lonely Planet
Planning a Trip with Google Maps
Orbitz
Trip Advisor
Currency Converter

Wacky Inventions 
National Inventors Hall of Fame
The 'Lectric Law Library's Lexicon
One Look Dictionary 
Dictionary.com
Wacky Patent of the Month

We Didn't Start the Fire
We Didn’t Start the Fire - YouTube

Weather Report
CNN - weather
Weather Underground
Map Maker

Where in the World Can Teens Volunteer?
GVI Global Vision International
Teen & High School Volunteer Abroad Programs | Under 18 Mission Trips

Who Invented It and When?
Timeline of historic inventions - Wiki