| Category | Format | Size |
|---|---|---|
| People's Education Press Sixth Grade Mathematics Volume 2 | pptx | 6 MB |
"Solving Problems with Proportions" Proportion PPT (Lesson 1)
Description
"Solving Problems with Proportions" Proportion PPT (Lesson 1)
Part One: Learning Objectives
1. Further understand the meaning of proportionality and master the methods and steps to solve problems using the knowledge of proportionality. (emphasis)
2. Correctly use the knowledge of proportionality to list equations and solve simple practical problems in life. (difficulty)
Use proportion to solve problems PPT, part 2: explore new knowledge
Knowledge points Use proportion to solve problems
Our family used 8 tons of water last month, and the water bill was 28 yuan.
Our family uses 10 tons of water.
How much was Grandma Li’s water bill last month?
Reading and Comprehension
To solve the problem of water bills, you need to know the unit price of water and the amount of water used.
Although the unit price of water is not known, it is certain.
Analysis and Answers
I first calculate the price per ton of water, and then how much 10t of water costs.
Are there any other solutions?
Knowledge refining
Methods to use proportional knowledge to solve problems:
(1) Determine whether the two related quantities in the question are directly proportional;
(2) If there is a direct proportional relationship, list the proportion or equation according to the meaning of direct proportion;
(3) Solve the proportion;
(4) Check and answer.
Use proportion to solve problems PPT, part 3: Consolidation exercises
1. Xiaolan’s height is 1.5 m, and her shadow length is 2.4 m. If the shadow of a tree is measured to be 4 m long at the same time and place, how tall is the tree?
Solution: Let the height of this tree be x m.
1.5:2.4=x:4
x=2.5
Answer: This tree is 2.5 meters high.
2. It takes 10.6 hours for the artificial earth satellite launched by our country to orbit the earth for 6 times in the air. How long does it take to orbit the earth for 15 times?
Solution: Suppose it takes x hours to run for 15 weeks.
6:10.6=15:x
x=26.5
Answer: It takes 26.5 hours to run for 15 weeks.
Use proportion to solve problems PPT, part 4 content: Class summary
What knowledge have you learned in this class?
Methods to use proportional knowledge to solve problems:
(1) Determine whether the two related quantities in the question are directly proportional;
(2) If there is a direct proportional relationship, list the proportion or equation according to the meaning of direct proportion;
(3) Solve the proportion;
(4) Check and answer.
Use proportion to solve problems PPT, part 5: homework
Assignment 1: Preview the next lesson.
Assignment 2: Complete the exercises corresponding to the detailed explanations in the textbook.
Keywords: Free download of PPT courseware for sixth grade mathematics volume 2 of the People's Education Press, PPT download for solving problems using proportions, download of proportion PPT, .PPT format;
For more information about the PPT courseware "Proportions Use Proportions to Solve Problems", please click on the Proportions PPT Use Proportions to Solve Problems PPT tab.
"Use Proportions to Solve Problems" Proportion PPT download:
"Use Proportion to Solve Problems" Proportion PPT Download Part One: Learning Objectives: Be able to correctly judge whether two quantities in a situation are directly proportional or inversely proportional, and be able to use the meaning of direct proportion or inverse proportion to solve practical problems. In going through the process of problem solving,...
"Solving Problems with Proportions" Proportion PPT (Lesson 2):
"Using Proportion to Solve Problems" Proportion PPT (Lesson 2) Part One: Learning Objectives 1. Further understand the meaning of inverse proportion, and master the methods and steps of using inverse proportion knowledge to solve problems. (Key Points) 2. Correctly use the knowledge of inverse proportions to list equations and solve biological problems...
"Solving Problems with Proportions" Comparison and Proportional Distribution PPT Courseware 2:
"Solving Problems with Proportions" Ratio and Proportional Distribution PPT Courseware 2 1. Old knowledge foreshadowing It is known that the ratio of the number of boys to the number of girls in Class 1 of sixth grade is 3:4 (1) The ratio of the number of boys to the number of the whole class is ( ): ( ) (2) The number of boys in the class is ( )/( ) (3) The number of girls..
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Update Time: 2024-06-29
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