"Basic Methods of Biological Research" PPT courseware

Description

"Basic Methods of Biological Research" PPT courseware

Part One: Situation Import

According to the teacher's request, find and capture rat women in your community or campus. When you captured the rat women, what kind of environment did you find the rat women living in? What are the salient features of this environment?

learning target

1. Experience the general process of inquiry, learn to control experimental variables and design controlled experiments.

2. Cultivate students' observation, thinking, analysis and experimental hands-on abilities.

3. In the process of exploring the environmental factors that affect the distribution of rat females, cultivate students' rigorous scientific attitude and develop the emotion of loving and caring for experimental animals.

Basic methods of biological research PPT, part 2 content: classroom inquiry

Research topic: Explore the environmental factors that affect the distribution of rat women

1. Discover and ask questions

Please use short sentences to accurately express the questions you raised from the perspective of the relationship between organisms and the environment. The question posed by your group is: What kind of environment is suitable for a rat woman to live in?

2. Gather information related to the problem

Based on the questions raised by your group, please go to the library or the Internet to find some information about the rat woman. Then record the relevant information you found concisely.

3. Make assumptions

Based on this information, please provide a tentative explanation for the questions you raised. This is a hypothesis. Your assumption is: Rat women are adapted to living in dark environments.

4. Design experimental plan

The environmental factors that affect the distribution of rat females that you are studying are ______; the experimental factors that you are studying are _______________, and the control conditions are ___________.

Basic methods of biological research PPT, the third part of the content: contact with reality, please analyze

Experimental hypothesis

When a research team explored the environmental factors that affect the distribution of rat bitches, they put forward the hypothesis that "rat bitches are afraid of light and they like dark environments."

experiment procedure

The team created an experimental environment that was half light and half dark, and the rats could move freely through both environments. There were 10 rats in the experiment. Every 5 minutes, the number of rats distributed in the light and dark places was recorded three times in total.

This experiment cannot prove their hypothesis. Please analyze the reason?

Tip: In addition to being affected by light, the distribution of rat worms is also affected by other factors such as moisture and temperature.

Basic methods of biological research PPT, part 4: training to meet standards

1. When exploring the impact of light on the lives of rat women, why should we design two environments, with and without light?

Act as a comparison.

2. Why use 10 rat women for the experiment? Is it okay to use only one for the experiment?

The experimental error can be reduced when the number is large. Using only one to do the experiment will result in a big error.

3. Why should we calculate the average of the whole group at all levels?

Calculating the average of the entire class can make the experimental results more accurate and convincing.

Keywords: Beijing Normal University version of the seventh grade biology PPT courseware for free download, basic methods of biological research PPT download, .PPT format;

For more information about the PPT courseware "Exploring the Basic Methods of Biological Research of Life", please click the "Exploring the Basic Methods of Biological Research of Life ppt" tab.

"Basic Methods of Biological Research" PPT download:

"Basic Methods of Biological Research" PPT Download Part One: Discussion and Materials Review Questions 1. Which four representative scientists did we study in the last class? What were the results of their research? 2. What are their research methods? Student discussion ring..

"Basic Methods of Biological Research" PPT:

"Basic Methods of Biological Research" PPT Part One Content: Situation Introduction When scientists were observing and studying rattlesnakes in the forest, they discovered a strange phenomenon: after the rattlesnake captures its prey, its fangs will quickly inject venom into the prey. , not...

File Info

Update Time: 2024-11-24

This template belongs to biology courseware Beijing Normal University Edition Seventh Grade Biology Volume 1 industry PPT template

Preview