The Tiny Troublemakers: teacher key

Germs, grade 2 edition, written for 2nd grade. Germs are too small to see, but they can spread fast. Find out how they move, and how you can stop them.

Read the book. Print this page for the key.

Questions and answers

1. What do you need to see a germ?
   • A ruler
   • A microscope (answer)
   • A mirror
2. What causes a cold?
   • A cloud
   • Cold toes
   • A virus (answer)
3. How long should you scrub your hands?
   • 20 seconds (answer)
   • 2 seconds
   • 2 hours
4. What do white blood cells do?
   • Hold your bones
   • Go after germs (answer)
   • Make you tall
5. How can germs get into your body?
   • Through your shoes
   • Through your hair
   • Through your eyes, nose and mouth (answer)
6. Why cover a sneeze with a tissue?
   • It keeps germs from spreading (answer)
   • It makes you louder
   • It warms your nose

Words

• virus: tiny germ
• bacteria: tiny living germs
• immune: germ-fighting
• microscope: tiny-seeing tool