Simple equation 1
Equality attribute 1 4
Equal attribute 2 6
Solve the more complicated equation 8
Aquaculture farm 1 1
Unit 2 Teaching Plan 1 1
The area of the parallelogram is 12.
Calculation of triangle area 15
The area of the trapezoid is 19.
Group calisthenics performance 22
-Factor and multiple 22
Three. Group calisthenics performance 24
-Prime number and composite number, factorizing prime factor 24
IV. China Hot Pole 27
-Understanding positive and negative numbers 27
Campus Science and Technology Week 30
-The meaning and nature of the score 30
Relationship between Fraction and Division 33
Basic properties of fractions 35
Six modes of beauty _ _ symmetry 38
Six, the beauty of the pattern-translation and rotation 40
Cities that won the UN Habitat Award-Statistics 42
Play checkers-possibility 44
Pick the second grade 49
Subject: Simple Equation
Teaching objectives:
1 Understand the meaning of the equation preliminarily in combination with the specific situation, and express the simple equivalence relation with the equation.
We can use equations to solve some simple practical problems. In the process of solving problems, we can feel the close connection between equations and real life, and form the sense of application.
Teaching emphasis: understand the meaning of the equation in combination with the specific situation, and express the simple equivalence relationship with the equation.
Teaching aid preparation: balance
Teaching process:
The teaching process and dialogue explain the main points of evaluation.
First, create a scene: show the scene map of the rare animal Baiji dolphin. Mathematical information: There are about 400 dolphins in 1980, 300 more than in 2004. What math questions can you ask according to this set of information? It is amazing to explore students and express the equal relationship between numbers in the picture in different ways. We can also use the balance to study this equation. The teacher introduced the function, structure and usage of the balance. 1 Understand the equal relationship between known quantities with the help of a balance. Understanding the equal relationship between unknown quantities with the help of balance. 3 understand the equation relationship in the example with the help of the balance. Third, solve the information window problem 2: 1 An equation containing X can be used to express the relationship between the number of artificial pandas and the number of wild pandas. Can it be expressed on the balance? Fourthly, can the relationship between the number of Siberian tigers in 2003 and the number of Siberian tigers in 20 10 be solved with the ideas just now? Can the teacher show the schematic diagram of the balance? Fifth, summarize the meaning of the equation and observe the formula on the blackboard. What did the students find? Summary: An equation with an unknown number is called an equation. 6. Independent connection 1 Determine which formulas are equations and which conditions must be met. 2. Summarize the students' observation information according to Equation 7 in the figure. Ask a question and show it: the relationship between the number of baiji in 2004 and the number of 1980 can be expressed by a formula with letters. Student exchange: There may be the following situations: the number of baiji dolphins in 2004 +300= 1980+0980+300 = 2004. A Put a 20-gram weight and a piece of wood with unknown weight on the left plate and a 50-gram weight on the right plate, and the balance will be balanced. The relationship between 20+x=50 students 1 is obtained: students communicate by themselves: 1 number of students trained only x 10= number of wild students who explore independently and then communicate. Students are free to talk about ideas: complete independent exercises 1. Guide students to tell the basis of judgment while judging right or wrong. (Students sum up by themselves) Self-exercises 2 and 3 Let students write the equivalence relation independently and list the equations for communication. Talk about the harvest and find out what you don't understand. Pay attention to whether students can think independently, explore the equal relationship between quantity and quantity in cooperation and express it in their own way. Pay attention to students' enthusiasm and summing-up ability in operation, observation and experiment activities. Pay attention to whether students can independently analyze the equivalence relationship and express it in letters. Pay attention to students' induction and sum up their own level. Pay attention to whether students can judge according to the meaning of the equation. Observe whether students can write the equation correctly according to the equal relationship between quantity and quantity.
Title: Attribute of Equation 1
Teaching objectives:
In specific activities, 1 will experience and understand the properties of equations, and will use the properties of equations to solve simple equations.
We can use equations to solve some simple practical problems. In the process of solving problems, we can feel the close connection between equations and real life, and form the sense of application.
Teaching focus:
In specific activities, to experience and understand the properties of equality, we will use the properties of equality to solve simple equations.
Teaching aid preparation: balance
Teaching process: