Hiding in Plain Sight: teacher key

Germs, grade 3 edition, written for 3rd grade. Germs are too small to see, yet they live all around us. Learn which ones help, which ones harm and how your body fights back.

Read the book. Print this page for the key.

Questions and answers

1. How many cells does a bacterium have?
   • Two
   • One (answer)
   • Millions
2. What does a vaccine teach your immune system?
   • To swim
   • To grow taller
   • To know a germ (answer)
3. What is a virus made of?
   • Genetic material in a protein coat (answer)
   • Only water
   • One big bone
4. Where do bacteria live?
   • Only in lakes
   • Only in space
   • Almost everywhere on Earth (answer)
5. Which is a fever?
   • 50 degrees
   • 100.4 degrees Fahrenheit or higher (answer)
   • A cold nose
6. Why are some bacteria good for you?
   • They help you digest food (answer)
   • They clean windows
   • They make noise

Words

• bacteria: tiny living germs
• virus: tiny germ
• vaccine: germ-training shot
• fever: hot body