When the Nose Runs: teacher key

Boogers and Snot, grade 3 edition, written for 3rd grade. A nose is made to make mucus, and sometimes it makes more. Learn why noses run, how colds spread and how to stay healthy.

Read the book. Print this page for the key.

Questions and answers

1. Where does mucus line the body?
   • Only the nose
   • The nose, lungs and digestive tract (answer)
   • Only the stomach
2. About how long does a cold usually last?
   • One to two weeks (answer)
   • One hour
   • One year
3. How do colds spread?
   • By germs from coughs and sneezes (answer)
   • By dust in books
   • By cold air alone
4. Why is washing hands a good idea in cold season?
   • Germs on hands can spread colds (answer)
   • Soap makes mucus
   • Hands make cilia
5. What do cilia do with mucus?
   • Make it purple
   • Sweep it toward the throat (answer)
   • Hide it
6. What does the word moist mean here?
   • A little wet (answer)
   • Very hot
   • Hard and dry

Words

• mucus: nose slime
• cilia: tiny hairs
• sinuses: nose air spaces
• acid: sour stuff
• tissue: nose wipe paper