SuJiao version of elementary school science third grade book five unit "what are they made of

1, Knowledge and Skills: to recognize some common materials, know that there are natural and man-made materials.

2, process and method: to be able to use a variety of senses and methods to recognize materials.

3. Emotions, attitudes and values: to realize that people are constantly researching, inventing and producing new materials to meet various needs.

4. To understand the invention of paper and the development of paper

5. To know the general properties and common uses of paper and to be able to relate the properties and uses of paper.

6. Environmental education on paper conservation.

7. Know the types of common textile materials and understand the characteristics of clothing woven from different textile materials.

8, able to use a variety of senses and methods to recognize textile materials, through experiments to study the nature of different textile materials.

9, emotion, attitude and values: through the design of future clothes activities May Day to stimulate students' sense of innovation, cultivate students' creative ability.

10, understand the types of common metals, understand the nature of different metals.

11, be able to use a variety of senses and methods to recognize metals, through experiments to study the nature of different metals.

12, stimulate students' sense of innovation, cultivate students' innovative ability.

13, understand the advantages and disadvantages of plastic.

14, be able to use the comparative method to recognize the advantages of plastics.

15, to stimulate students' awareness of environmental protection, and strive to be a small environmental care.

1 "common materials" lesson plan

Teaching objectives:

1, knowledge and skills: to recognize some common materials, know that there are natural and man-made materials.

2, process and method: to be able to use a variety of senses and methods to recognize materials.

3. Emotions, Attitudes and Values: to realize that people are constantly researching, inventing and producing new materials to meet various needs.

Teaching content:

SuJiao version of the third grade of elementary school science, Unit 4, Lesson 1, "common materials"

Teaching key points:

The key point is to recognize the common materials, and know the characteristics of each material. The difficulty is to draw a distinction between natural and man-made materials.

Teaching Preparation:

1, a variety of objects made up of different materials, a variety of common objects in students' lives.

2, students each bring a toy.

Lesson time: 1 lesson time

Teaching and Learning Program

Talking Introduction:

The objects we use in our life are made of a variety of materials. For example, books are made of paper, tables are made of wood, and ships are made of metal ....... Today we will get to know the common materials in our lives. (Show the topic: common materials)

I. Discuss, what are they made of?

Show the wall chart and look at the objects in the classroom, what are they made of?

First of all, let's clarify two concepts: what do we mean by "object" and what do we mean by "material"? Students can understand that the things used to make various objects are called materials.

With the form of "brainstorming", group discussion, and the leader is responsible for recording, after the discussion on behalf of the group by the leader of the group to speak, and compare to see which group to observe the most carefully, explore the question of the correct rate of high.

Two, where do they come from?

In a variety of materials, some from nature, they are natural materials, such as cotton, wool, wood and rubber, etc.; some materials are not directly from nature, but scientists developed, such as plastics, alloys and so on.

The process of making some materials:

Shearing wool -- spinning it into wool -- weaving it into sweaters

Cutting gum -- adding acid to solidify it --Made into rainboots

Mining crude oil --Refining petroleum --Processing plastics

Three, hands-on

Open your book to page P41. Look at the items in this room on the example chart. Which ones might be made of natural materials? Which ones might be made of synthetic materials? Write your observations on your activity log.

There are many things in the room that are made from different materials. Can you name the characteristics of these materials?

Four, cooperative learning

Observe the shoes you wear on your feet, how many materials is it made of? Why choose these materials, where do these materials come from?

V. Extended practice.

Choose any object made of two or more materials and follow the questions above.

Teaching Feedback:

2 "Paper"

Teaching Objectives:

Knowledge Objectives:

1. To understand the invention of paper and the development of paper

2. To know the general properties of paper and the common uses of paper and to be able to relate the properties of paper to its uses.

Ability Objectives:

1. To be able to use a variety of senses and tools to investigate paper.

2. To be able to express the results of the investigations and communicate them by using language, words and other means.

Affective Objectives:

1.Cultivate the spirit of patriotism in students

2.Environmental education of saving paper.

3, scientific investigation in cooperation with others

Key points, difficult points

Key points: to understand some of the properties and characteristics of paper

Difficulties: students to communicate the results of the study of paper in a visual way

Teaching preparation:

Teachers' preparation:

Teachers' preparation: multimedia textbook

Grouping materials: a variety of different kinds of paper, dropper, red ink and so on

Grouping materials: different kinds of paper, red ink and so on

Paper is the most important material in the study of the paper, and it can be used for the study of paper. Red ink, etc.

Teaching process

A, talk about the introduction, stimulate interest in science

1, talk: students, today we meet for the first time, so the teacher asked the children to enjoy a group of beautiful crafts.

See clearly with what materials? Please look at the big screen.

2, the computer shows the paper crafts

3, Q: know what these items are made of?

4. Talk: Do you want to know the origin of paper?

5, the computer shows: the origin of paper (understand one of the four great inventions of ancient China papermaking)

6, Q: daily life you have seen what kinds of paper? What are the main uses of these papers?

[Design intention: through the display of paper material items, let the students enter the temple of paper, with a video to show the origin of China's four great inventions of paper, to stimulate students' feelings of patriotism, for the next in-depth study of paper to lay the foundation of interest and emotion]

Two. Independent inquiry, to understand the characteristics and uses of paper

(a) Recognize the characteristics of various kinds of paper

1, talk: the teacher also brought some paper to the children today, please take out the first envelope, recognize is all what paper? Group members can communicate with each other.

2, the collective exchange

3, Question: If the teacher has just finished eating, want to use paper to wipe their mouths, please use kraft paper or napkins good? Why?

4, talk: explain the various kinds of paper has its different characteristics, think about what methods to study the different characteristics of various kinds of paper? Group discussion.

5 group discussion (observation, experiment)

6, report and exchange of the board

[Design intention: through observation to recognize the common paper around us, in the existing cognitive basis of the direct feeling of different kinds of paper has different uses, while the transition to introduce the desire to cause the students to explore]

(B) the study of the nature of the paper

1, talk: the original We know so much about the nature of paper ah, next we will study the nature of paper, okay?

2, talk: due to the limited time in the classroom, today's lesson we on the strength of paper, water absorption and transparency to study

A: different paper strength of the investigation

1, talk: kraft paper and rice paper which is more sturdy?

2, students guess

3, group discussion to design an experimental program

4, reporting and exchange, improve the research program (two identical paper)

5, group experiments

6, exchange report

7, the teacher concludes: it is because of the kraft paper, so we often use it to do the packaging items.

8, talk: the teacher would like to leave a question to the children, the same kind of paper it is horizontally and vertically strong degree is the same? Children may wish to go home and do an experiment

B paper absorbency

1, talk: kraft paper and rice paper which absorbency is good?

2, students guess

3, group discussion to design an experimental program

4, reporting exchanges, improve the program (the number of drops of water to be the same)

5, group experiments

6, exchange report

7, the teacher concludes: it is because of the absorbency of the rice paper is good, so we often use it to write and paint

C: paper transparency

1, talk: kraft paper and rice paper which transparency is good?

2, students guess

3, the exchange of methods

4, student experiments

5, the exchange of results

6, the teacher concludes: through the experiment we learned about the different properties of the paper, it is because of the different properties of the paper to produce a different kind of paper and paper for different purposes.

[Design intent: many characteristics of paper, choose kraft paper and rice paper for comparison experiments, the experimental effect is obvious, for children who just contacted the scientific study of experimental success can bring great joy of success, the degree of solidity, absorbency and transparency of the study, you can let the students through the conjecture, the design of experiments, the results of the verification of the three levels of development of the students' ability to explore, improve the students from a young age love of science, learn science, use science literacy, and the students' love of science. science, use science, scientific literacy].

Three, understand the process of papermaking, recognize the importance of saving paper

1, talk: children, do you want to know how paper is produced?

2, the computer shows: (paper production process)

3, talk: the main raw material of paper is wood, of course, with bamboo, waste paper, straw, old cotton cloth and so on can also make paper. Children, you know some new materials of paper? Computer to show the relevant information

4, talk: After reading, say what you think? (Save paper, cherish resources and protect the environment education)

5, talk: in our learning and life, we need to use a lot of paper, paper in our lives is indispensable to the necessary supplies, how can we do to save paper? Can we combine the specifics of life to say? (Combined with the actual life, local habits to save paper education)

6, paper design

Talk: Knowing this knowledge, you hope the future of the paper will be what? Design different types of paper according to the needs of life, such as rain.

[Design intention: through the ancient paper making video display to let students understand the production of paper is not appropriate, through the modern production of paper process flow chart, let students produce saving paper, protect the environment and maintain ecological balance resource education, design paper activities, to cultivate students' sense of science and technology innovation].

Four, extracurricular extension

To understand the recycling of paper, do a paper crafts.

[Design intention: to allow students to participate in certain social practice activities, fully feel the way and meaning of science learning, through the waste utilization of making paper crafts activities, to cultivate students' hands and brains of scientific and technological innovation, which is a kind of extension of science teaching]

Fifth, the design of the board:

Sturdiness

Absorbency

Paper Transparency

3 "Textile Materials" Lesson Plan

Teaching Objectives:

1, Knowledge and Skills: to understand the types of common textile materials, and to understand the characteristics of clothing woven from different textile materials.

2, process and method: to be able to use a variety of senses and methods to recognize textile materials, through experiments to study the nature of different textile materials.

3, emotion, attitude and values: through the design of future clothes activities May Day to stimulate students' sense of innovation, cultivate students' creative ability.

Teaching content:

Primary science third grade, Unit 4, Lesson 3, "Textile Materials"

Teaching focus, difficulties:

The focus is to recognize the various types of textile materials, to understand the different properties of cloth woven from them. The emphasis is on doing experimental research to compare the differences between cotton and nylon.

Teaching Preparation:

1. Clothes woven from various types of textile materials.

2. Materials such as cotton and nylon for experiments.

Lesson time: 1 lesson time

Teaching and learning process

Talk introduction:

In the last lesson, we were introduced to the properties of paper, which is the most commonly used material in our life, and the objects made from it. Today we will learn about another indispensable material in our lives, from which the clothes we wear are woven. This is - textile materials. (The board book topic: textile materials)

I. Stimulate the interesting knowledge of clothing

Show the picture in the textbook P47, ask the students to work in small groups, take a good look at the total **** how many pieces of fabric made of items? Compare and contrast, which group is right?

Teacher: All these fabrics are woven from common textile materials. Different materials woven into cloth can be made into different kinds of clothes, as shown in the picture: there are cotton clothes, woolen clothes, nylon umbrellas, silk shirts and ties.

Activities: students to take off their own clothes, recognize the markings on it, do you know these clothes are made of what textile materials woven? (The name of various textile materials on the board)

Cotton, nylon, wool, polyester, polyester ......

Nylon is the world's earliest man-made synthetic fiber, which is extracted from petroleum.

Two, experimental studies to compare the differences between cotton and nylon

1, compare the sturdiness experiment.

(1) Pull the fibers out of the fabric;

(2) Look at it with a magnifying glass;

(3) Pull it again.

2. Comparison of odor experiment

Burn the cotton and nylon separately, and then fan your hand and smell them, what is the difference between the two smells?

3, compare the water absorption experiment

(1) cut the same size, the quality of similar nylon, cotton cloth each piece;

(2) they are sunk into the water at the same time;

(3) a period of time (3 minutes), to compare to see which fabric absorbs more water?

(Expand) Think: Do you have other ways to test the water absorption of nylon and cotton fabrics?

Students fill out the lab recording sheet.

Three, discussion

Teacher: our motherland is vast, the north and the south of the climate is very different, if we go from Xiamen to play in the northeast, then we need to bring a lot of clothes, out of the travel is very inconvenient. Now ask students to use their brains, for the future design of clothing design, you hope that the future of clothing is what kind?

4 "Metals" lesson plan

Teaching Objectives:

1, Knowledge and Skills: to understand the types of common metals, to understand the properties of different metals.

2, process and method: to be able to use a variety of senses and methods to recognize metals, and to study the properties of different metals through experiments.

3, emotion, attitude and values: to stimulate students' sense of innovation, cultivate students' ability to innovate.

Teaching content:

Primary Science Grade 3, Unit 4, Lesson 4, "Metals"

Teaching focus and difficulties:

The focus is to recognize the various types of metals, to understand by their different properties. The focus is on doing experiments to summarize the properties of metals.

Teaching preparation:

1, various types of metal segments.

2, the experiment with the relevant materials.