"Direct Proportion" Proportional PPT courseware

"Direct Proportion" Proportional PPT courseware

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"Direct Proportion" Proportional PPT courseware

The time and distance traveled by a car are as follows.

Observe the table above and answer the following questions:

(1) What two quantities are in the table?

(2) How does the distance change over time?

(3) What is the corresponding ratio of distance to time? What is the ratio?

The ratio of distance to time:

(1) The distance changes with time;

(2) As time expands, the distance will also expand; as time shrinks, the distance will also shrink;

(3) The ratio of distance to time is 90.

Two related quantities. If one quantity changes, the other quantity will also change. If the ratio (that is, the quotient) of the two corresponding numbers in the two quantities is constant, the two quantities are said to be directly proportional. quantities, their relationship is called a direct proportional relationship.

Decide whether the two quantities in each question below are directly proportional and explain why.

The ship travels at a certain speed, distance and time.

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For more information about the PPT courseware "Proportion and Proportional Proportion", please click on the Proportion ppt Proportional Proportion ppt tag.

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"Letter Expressions of Proportional and Inverse Proportions" PPT:

"Letter Expressions of Direct Proportion and Inverse Proportion" PPT Part One Content: Teaching Objectives 1. Combined with specific examples, go through the process of reviewing the definitions of direct and inverse proportion, discussing problems and summarizing mathematical expressions. 2. Be able to judge common quantitative relationships between three quantities in a certain quantity..

"The Meaning of Proportionality" PPT:

"The Meaning of Direct Proportion" PPT Part One Content: Teaching Objectives 1. Understand the meaning of direct proportion and be able to judge whether two quantities are directly proportional based on the meaning of direct proportion. 2. Initially train students to analyze problems from the perspective of interconnectedness and development of things. ..

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