Tutorial for teachers - How to select keywords to get the best search results?

Learning to find information quickly and effectively is essential to successfully using the Internet. Specialized search Web sites allow users to search for content that meets the selection criteria they specify. Keyword searching is an effective way to locate information on the World Wide Web.
Keywords are used to find relevant Web sites and pages. "key" has more than one meaning; here it means "important.
We are now learning  'how to select keywords to produce the best search results?'
Following procedure can help you get the best search results.

Procedure for selecting suitable keywords and use them to get the best search results:
Fine-tune your keywords: 
If you're searching on a noun (the name of a person, place or thing), remember that most nouns are subsets of other nouns. Enter the smallest possible subset that describes what you want. Be specific. Try to meet the search engine halfway by refining your search before you begin.

Example: If you want to buy a car, don't enter the keyword "car" if you can enter the keyword "Toyota." Better still, enter the phrase "Toyota Dealerships" AND the name of the city where you live.

Be Refined: 
Read the help files and take advantage of the available search refining options. Use phrases, if possible. Use the Boolean AND (or the character +) to include other keywords that you would expect to find in relevant documents.
Also learn to EXCLUDE with the Boolean NOT. Excluding is particularly important as the Web grows and more documents are posted. Run your initial query over again several times, each time adding further refinements to narrow down your list of relevant hits.

Example: If you want to find out how medical details about your grandmother's diagnosis of Alzheimer's Disease, try entering "Alzheimer's" AND "symptoms" AND "prognosis." If you want to find out about Alzheimer's care and community resources, query on "Alzheimer's" AND "support groups" AND "resources" AND NOT "symptoms."

Query by example: 
Take advantage of the option that many search engine sites are now offering: you can "query by example," or "find similar sites," to the ones that come up on your initial hit list. Essentially what you're doing is telling the search engine, "yes, this looks promising, give me more like this one."

Anticipate the answers: 
Before searching, try to imagine what the ideal page you would like to access would look like. Think about the words its title would contain. Think about what words would be in the first couple of sentences of a webpage that you would consider useful. Use those words, or that phrase, when you enter your query.

Tips to buy safe and healthy lunch box for kids

Every mom wants to provide healthy and safe food for school going kids, but we sometimes ignore to check the material we use for packing lunch to tiffin. Parents should carefully select the food grade lunch boxes for their kids.

If you want to make sure that the healthy lunch that you pack for your child stays healthy and nutritious, you can avoid common contaminants and costly throw-aways by choosing the right lunch box solutions.

These tips are helpful to choose safe product for your kid's health and select lunch box made of harmless material which is healthier for regular use.

Cotton, bamboo spork, stainless steel, cloth are safe products for lunch boxes.

Metal or cloth is better than plastic:
Many plastic lunch boxes are made of PVC, which can contain contaminants such as lead, or leach chemicals like phthalates and BPA. If plastic is your best option, look for lunch boxes that are phthalate and BPA-free.

Wrap without plastic wrap or plastic baggies: Some plastic wrap and baggies are made with toxic chemical phthalates. Re-useable containers are a better choice; or you can choose butcher paper and bags such as GLAD brand made with polyethelyne.

Pack it yourself:
Packaging for greasy foods like microwave popcorn and french fries may be treated with PFCs, a non-stick coating linked to health disorders. Canned food and soda may also leach the chemical BPA. Choosing fresh or bulk food to package yourself is a healthier alternative.


Pack a No-Waste Lunch Box: The idea of lunch brought to and from school in a paper or plastic bag seems old fashion, but the use of an actual lunch box or reusable sack makes your eco-friendly options all the easier.


And finally, pack your food and drink in reusable containers. Just think of all the money you'd save per child per school year if you packed just two snacks and a drink in reusable containers.

Plastic Free Snacks and Sandwiches:
It's also great to stop using all those plastic zip bags and try reusable snack bags. These bags are handmade and come in some pretty fabrics. They're simple to wash and keep food fresh all day.