Open Question: Take a moment to reflect on your experience of infectious diseases. Can you give a positive and negative example

THINK- PAIR- SHARE THINK about what you know about microbes Turn to a PARTNER and share your knowledge Do you have anything to SHARE with the class?

GO FISH Before you start, distribute paper bags to each group of students. Fill the bags with paper strips on which you have written important questions about the topic. Every ten minutes or so, stop and tell the groups to choose a strip from the jar (or two, or three, etc.). You can choose the person who picks the strip by doing a round-robin or by saying things like, "The person with the most pets at the table chooses the next slip" or "The person wearing the brightest coloured socks," etc. The group must either answer the question or explain why the fact was important. If the question or fact was not yet covered, they put it back in the jar and choose another. Groups can report after each round so that information is repeated a third time.

PASS THE BUCK At stages during the lesson, stop and ask for one question from a volunteer. Answer the question and thank the student with a dollar. Continue with lesson and encourage good questions. When the next question is asked, tell the first person to pass the dollar to the person asking the second question. The dollar makes its way around the room. At the end of the lesson, the person who asks the last question keeps the dollar. This same idea can also work with the teacher asking the questions and students being rewarded with the right answer. If you do not feel comfortable using a dollar, any prize can be used instead.

QUESTION & ANSWER PAIRS Take a moment to think of a question Then, see if you can stump your partner!