According to the age characteristics of students and the existing knowledge and experience, students are required to collect the newly confirmed cases and new deaths in a fixed period of time during the epidemic in advance. In this process, students' ability to collect and sort out information is emphasized, and children's patriotic spirit of paying attention to the country is cultivated. As students can draw a histogram, let them question the two kinds of data in the process of making a statistical chart. Learn this lesson with questions and guide students to make a composite histogram further. Make use of old knowledge, find out solutions to problems, encourage students to think positively, change passive learning into active learning, and make mathematics classroom more efficient.
Second, the combination of chapters.
Beijing normal university printing plate fifth grade mathematics volume 2 unit 8 lesson 1 double bar chart
Third, the teaching objectives
1. Understand and learn the ancient counting methods by counting short stories.
2. Through the process of making composite bar graph, I realized the necessity of introducing composite bar graph and understood its significance.
3. Pay attention to the process of collecting, sorting, describing and analyzing data, encourage students to get as much effective information as possible from the data, and reflect the value of data analysis.
4. Develop the study habit of thinking independently and being brave in questioning.
Fourth, the significance of the case.
1. Infiltrate mathematical culture. Let students be influenced by mathematical culture in the process of learning mathematics, appreciate the colorful development process of mathematics, exude unique cultural charm, and make students more confident in culture.
2. Carry out life education. Cultivate students' concept of caring for health and life, and let students form a positive outlook on life.
3. Education of ideals and beliefs. As a good teenager in the new era, cultivate students' ideals and beliefs of "being a pioneer when they are young and being a pioneer when they grow up".
The implementation of verb (verb abbreviation) teaching process
1. Story import
(1) Destroy the enemy. The first counting tool that our ancestors thought of was their own body organs, and the first one was 10 fingers. When counting a large number of items, people are used to tying each 10 into a group. The ancient Babylonians used 12 joints of one hand (three joints on each finger from the index finger to the little finger) to count to 12, and used five fingers of the other hand to count to 60 (five 12).
(2) Physical inventory. 8,000 years ago, shepherds counted sheep like this: whenever a sheep left the sheepfold, they put a stone on the ground; When the sheep are full, they take out a stone from the pile; In this way, we can clearly know whether all the sheep have been circled.
(3) Knot counting. Tie a knot on the rope to remember, and each knot on the rope represents a thing or a thing that happened. And so on. In ancient Peru and Bolivia, the Incas recorded numbers by tying knots, and the color, size and position of the rope represented different values respectively. In China, until after the Song Dynasty, there was still the custom of counting knots in the south.
Design intention permeates mathematical culture. Mathematical culture plays an extremely important role in improving our comprehensive quality. The function of mathematical culture is not only to cultivate people's computing ability, but also to influence personality quality and humanistic spirit, improve thinking quality and cultivate learning ability and application ability.
Explore new knowledge
(1) looking for a needle in a haystack
Investigation: From March 7th to March 3rd, 2020/kloc-0 at 0: 24, 3 1 province (autonomous region, municipality directly under the central government) and Xinjiang Construction Corps, newly confirmed cases and new deaths were added. Please fill in the following table. (Unit: person)
Communication: How did you get the data? Let's communicate with you!
Suggestion: learn to simply collect and sort out information; Can consciously obtain some data information from newspapers, magazines, television and other media; As a good boy, he always pays attention to national affairs.
The design aims to cultivate students' ability to collect and organize data; Consciously paying attention to the country is a patriotic feeling.
(2) a wave of his hand
Hands-on operation: draw a statistical map of newly confirmed cases and new deaths of coronary pneumonia from March 7 to March 3, 2020.
Question: How to represent these two sets of data with bar charts?
The design intention is to let students choose the appropriate statistical chart according to the background of the problem, and further improve students' data expression and analysis ability; Clever questions make students try bravely and pave the way for the focus of this lesson.
(3) mastery through a comprehensive study
Hands-on operation: draw a composite bar chart.
Question: What mathematical information can be obtained from the composite bar chart?
Little Prophet: Can you predict the future epidemic?
The design intention will get information from the statistical chart, feel the characteristics of data distribution, solve problems and develop the concept of data analysis; The data will be simply reasoned and explained through statistical charts.
expand
(1) Understand various statistical charts.
The design aims to cultivate students' interest, let them know more about statistical charts, and discover the characteristics of statistical charts: concrete, concise, vivid, easy to understand and clear at a glance.
(2) By comparing the epidemic data at home and abroad, talk about your opinion.
(3) Enjoy the video "Human Destiny in an Epidemic" and talk about your feelings.
The design aims to make students realize that while China is fighting the epidemic nationwide, more and more countries and regions in the world have also started the practice of "Fate * * *". Those true friends gave China support and encouragement.
summary
(1) Read Grandpa Zhong Nanshan's reply and talk about his own experience.
(2) exchange and summarize the harvest of this class.
The design intention is to make students realize that they are living in a happy era by learning from Grandpa Zhong Nanshan's reply. They should keep learning, study hard scientific and cultural knowledge, constantly improve their abilities, and better devote themselves to the construction of the motherland in the future.
Sixth, teaching evaluation.
German educator Steward believes that the essence of teaching art is not to impart knowledge, but to inspire, awaken and inspire. This class can show that teachers can really mobilize students' subjective consciousness.
In re-education, teachers should let go appropriately and let students discover, create and practice by themselves. There is no way to restrain students' creativity with rigid models, and children are not allowed to act according to teachers' thinking and ideas. Let students dare to think and speak in a pleasant and relaxed atmosphere.
"A stone stirs up a thousand waves" students' thoughts collide with each other and produce dazzling sparks. In teaching, teachers strive to provide students with opportunities to put themselves in problem situations, create an atmosphere that encourages exploration and understanding, provide inspiring discussion modes for students, and experience the process of knowledge generation and formation through students' independent activities.
Seven. Case reflection
Excavate the characteristics and advantages of mathematics. According to the data under the epidemic background and the ideological reality of primary school students, the camera directly or indirectly carries out patriotic education while strengthening the teaching of basic mathematics knowledge, so as to achieve the simultaneous completion of knowledge teaching and ideological education.
1. Mathematics comes from life and is also applied to life. From the three counting stories in the introduction to the suggestions in "Looking for a needle in a haystack" and the little prophet in "Mastery", the core literacy of mathematics is fully embodied. Pay attention to the process of collecting, sorting, describing and analyzing data, and encourage students to obtain as much effective information as possible from the data; Pay attention to the close connection with real life and appreciate the value of data analysis.
2. Guide students to establish a correct outlook on life, values and world outlook. From the ideal education in Grandpa NANBERT ZHONG's reply to the patriotic concern education in the same body of human destiny. While guiding students to the peak of knowledge, we should also guide them to shape noble personality and create a new generation of industrialists with ideals, morality, culture and discipline.