Why does Apple land courseware, why does Apple land Teaching design

Cooked, gravity of the earth, Newtonian science...

[Teaching content analysis].

Why did apples fall to the ground" is the third lesson in the "Ubiquitous Force" unit in the second volume of the fourth grade of the Sujiao version of primary school "Science".

The unit "Forces Everywhere" focuses on guiding students to establish some general concepts about force, and at the same time, through the study of Newton's first law and the equilibrium condition of two forces, further understand that force is the cause of the change of the motion state of objects, and through the study of gravity, friction and resistance, the abstract concepts can be gradually understood and deepened in the discussion. This unit is composed of five lessons: "Force in **", "After the Shape of the Object Changes", "Why Apples Fall to the Ground", "The Secret of Friction", and "Making a Car". "Why Apples Fall to the Ground" starts from the perceptual understanding of why objects always fall to the ground, the understanding that any object on the ground is affected by the gravitational force of the earth, and rises to the rational understanding that objects have gravity.

Analysis of Students' Learning Situation].

After learning the previous unit "The Movement of Objects" and this unit "Force in **", "After the Shape of the Object Changes" two lessons, students have a preliminary experience and feeling of force, but the concept of force is still relatively abstract and difficult to understand, we should not only let students perceive and recognize from many aspects through classroom learning activities, but also avoid giving the concept of the three elements of force too early and too bluntly in learning activities, how to grasp the breadth and depth of teaching under the current situation of education is very difficult. The story of "Newton's discovery of the earth's gravity" in "Why Apples Land" introduces Newton's thinking and research process on the phenomenon of observing apples falling to the ground, reflecting the great significance of Einstein's saying that "raising a question is more important than solving a problem", and students are full of expectations and enthusiasm for the learning of this lesson.

Design Ideas] This course will organize students to reproduce the phenomenon of gravity and gravity and carry out systematic and hierarchical research activities based on their own life experience, such as "apple landing", "throwing stationery", "comparing gravity", "accurately bombing targets" and other lively and interesting activities. Guide students to experience the experience of the great scientist Newton's discovery of gravity and gravity, and further understand the close connection between science and life.

It is said that one day Newton was lying under an apple tree when he suddenly saw an apple fall to the ground. He asked himself, why did the apple always fall to the ground instead of flying into the sky? After in-depth research, he finally uncovered the secret of Apple's landing.

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Teaching Objectives:

Scientific knowledge. 1. Understand that everything on the earth has a vertical and downward gravity, and the gravity of objects is caused by the gravitational force of the earth.

2. Know that objects always fall vertically due to the gravitational pull of the earth.

Process & Methodology.

1. Be able to collect relevant examples to illustrate the prevalence of gravity.

2. Be able to feel the direction of the object's gravity through experiments.

Emotions, Attitudes & Values.

1. Feel the fun of scientific activities and **. Be willing to share their views and opinions with other students.

Teaching Focus: 1. Recognize that the attraction of the earth causes the object to be subjected to force - gravity, and gravity is generated by the gravitational force of the earth.

2. Understand that the direction of gravity is vertically downward.

Teaching difficulties: 1. Understand that the direction of gravity is vertically downward.

2. No matter where the object is on the earth, the direction of gravity always points to the center of the earth.

Preparation for teaching: simulated diagrams, cotton threads, cups, suggestion cards, any stationery around students, arrow stickers to indicate gravity.