1. 22-January 2019 LO: I can explain the effects of some microorganisms in humans

2. Key Question: What do you think causes teeth to decay?

3. What do you think causes the bubbles which make the bread rise?
Yeast (Y6 CLT ITR 4)
What do you think causes the bubbles which make the bread rise?

4. Talk-and-turn compare the pictures
Talk-and-turn compare the pictures. Give some examples of useful and bad bacteria and how they affect humans.

5. Notes What are the harmful effects of bacteria?
“Good” bacteria, also known as beneficial bacteria, are defined as any bacteria that are beneficial to the body and enhance health. One of the most well known types of good bacteria are probiotics. Of the total bacteria in our bodies, a healthy balance is 85% good bacteria and 15% bad bacteria.
What are the harmful effects of bacteria?
Harmful bacteria are called pathogenic bacteria because they cause disease and illnesses like strep throat, staph infections, cholera, tuberculosis, and food poisoning.

6. 22-January 2019 LO: I can explain the effects of some microorganisms in humans
Group work: Children to read about “Viruses depend on other living beings in order to survive”. Discuss the main idea of the article then answer the questions that follow.