Page 37 - 新思维科学学生用书6 样章
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1 The human body
Activity 2
Group methods to prevent diseases
We use different methods to prevent the spread of different types of diseases.
Sort and group the hygiene methods you have learnt about into these groups:
• Ways to prevent diseases spread in food.
• Ways to prevent diseases spread in water.
• Ways to prevent diseases spread in body fluids.
Present your answer in the form of a table.
Think like a scientist
Analyse hygiene methods that people use
Class 5 did a survey of people in their local community to find out which
hygiene methods they used. These are their results.
Method to prevent infectious diseases Number of people who use this
method
wash hands after going to toilet 10
wash hands before working with food 5
wash hands after working with food 4
keep the kitchen, toilet and surroundings clean 12
cover nose and mouth when coughing or sneezing 7
1 Draw a dot plot of the results.
2 a Which hygiene method do most people use?
b Which hygiene method do fewest people use?
3 Why do you think people should wash their hands with soap and water
and not just water?
4 Why should people wash their hands before and after working with food?
5 Why should we cover our nose and mouth when we cough or sneeze?
6 Why do you think it is important to dry our hands well with a clean towel?
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