1) Accuracy. Verify the information you already know against the information found in the source. Look also for disclaimers as to the accuracy of the content. You may also want to double-check the information against a source that you already know is trustworthy. Even though a source may use technical language, the content may be misleading.
2) Authority. Make sure the source is written by a trustworthy author and/or institution. If you are using a webpage, you can usually identify the owner/publisher by the URL, or check for a copyright statement near the bottom of the page. Make sure the author has the proper credentials on the subject matter. Also, determine if the source is biased. For example, if it is medical information from a drug company, that company will provide information in support of its product. Be aware of the objectivity of the author and his/her viewpoints.
3) Currency. Depending on your subject, your currency needs will vary. For topics related to recent breakthroughs in medicine and technology, you will need to find up-to-date sources. If, however, you are researching a historical topic, older resources may still be useful. For webpages, you can often find a copyright date near the bottom. Also, look for the words "revised" or "updated" to find the date of the website.
        
             
        
        
        
Answer: The time period was from a time ago. At least before they had whiteboards and still when they had to use wooden ovens to keep warm instead of a heater. The chalkboards aren't used anymore and not many teachers refer to children as primary children. 
Explanation:
 
        
                    
             
        
        
        
Muse, Greek Mousa or Moisa, Latin Musa, in Greco-Roman religion and mythology, any of a group of sister goddesses of obscure but ancient origin, the chief centre of whose cult was Mount Helicon in Boeotia, Greece. They were born in Pieria, at the foot of Mount Olympus. Very little is known of their cult, but they had a festival every four years at Thespiae, near Helicon, and a contest (Museia), presumably—or at least at first—in singing and playing.
 
        
             
        
        
        
Answer:
Characterization is your best answer.
Explanation:
This shows that the Grandfather is very fond of nature or very fearful (a character trait of his), and that he is teaching his grandson to carry on this trait of "respecting" nature. It is not a theme, for it does not have enough information or is not the central topic within the writing.
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