"Raw Food and Cooked Food" Food PPT Courseware

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"Raw Food and Cooked Food" Food PPT Courseware

Notes on observing and comparing raw and cooked potatoes:

1. Make full use of your senses to observe, such as through seeing, smelling, tasting, touching, etc.

2. Be sure to pay attention to safety when using a knife.

3. Group members cooperate with each other and record while observing.

4. Arrange the experimental equipment after the experiment is completed.

Kind tips

1. Use external flame to heat. After heating, use lamp cap to extinguish the alcohol.

2. Pay attention to safety and do not touch hot objects.

3. First observe the characteristics of the food before heating, and then light the fire to heat the food.

4. To save time, the water used to cook the pork should just cover the pork slices.

5. During the observation process, the team’s findings should be recorded in the form in a timely manner.

6. Division of labor and cooperation, and organize materials in a timely manner.

Why can some foods be eaten raw while others must be cooked?

The protein and fat in food will change after heating and become easier to be digested and absorbed by the body. Moreover, cooked food is softer and easier to digest. In addition, some bacteria and parasite eggs can be killed during the heating process, but some nutrients will be lost during the food processing.

Raw food will retain its own nutrients, especially vitamins, which will not be destroyed. Therefore, using raw food can reduce the loss of nutrients, but you must pay attention to dietary hygiene when eating raw food.

True or False

1. In order to ensure the body's absorption of nutrients, some foods are suitable to be eaten raw and some foods are suitable to be eaten cooked. ( )

2. High-temperature heating will destroy the nutrients in food, so food should be eaten raw. ( )

3. After protein and fat are heated, they become easily digested and absorbed by the human body. ( )

4. Raw food and cooked food have their own advantages and disadvantages. ( )

Fill in the blanks

1. The ( ) and ( ) in food will change after heating and become easier to be absorbed by the human body ( ) and ( ), and cooked food is softer and easier to digest. However, during the processing of food, some nutrients will be lost.

2. Raw food will retain its own nutrients, especially ( ) will not be destroyed. Therefore, using raw food can reduce the loss of nutrients, but you must be careful when eating raw food ( ).

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For more information about the "Food Raw Food and Cooked Food" PPT courseware, please click the Food ppt Raw Food and Cooked Food ppt tab.

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Update Time: 2024-11-20

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

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