"Finding Defective Products" Discovery Park PPT Courseware

Description

"Finding Defective Products" Discovery Park PPT Courseware

teaching objectives

1. Combined with specific examples, go through the process of discussing, communicating, and summarizing the method of "finding defective products".

2. Understand the general method of "finding defective products" and be able to answer simple "finding defective products" problems.

3. Be curious about the problem of "finding defective products" and gain successful experience in the process of exchanging your ideas with others and collaborating to solve problems.

Explore new knowledge

There are 6 fitness balls with the same size and pattern. One of them is lighter, but it cannot be weighed by hand.

Weigh in groups of two. Place a fitness ball on each side of the scale. If it is balanced, the balance indicates that neither of them is defective.

Two by two, if you balance it for the first time, the light fitness ball will be among the two fitness balls that are not weighed.

Two by two, if it is not balanced the first time, the lighter fitness balls will be among the 2 higher fitness balls on the tray.

Divide the 9 parts into 3 parts and divide them equally to ensure that defective products are found and the number of weighing times is minimized.

Is it true that in all problems of finding defective products, dividing it into three equal parts can ensure that defective products are found, and the number of times required must be the least?

When using a scale to find defective products,

Divide the items to be divided into 3 parts,

Divide those who can divide equally into 3 equal parts;

It cannot be divided equally,

The difference between the larger portion and the smaller portion should also be only 1.

This will not only ensure that defective products are found,

And the number of weighings must be the least.

Consolidate application

practice

1. There are 7 boxes of milk, one of which is slightly lighter. Using a scale, how many times can you definitely find this carton of milk by weighing it?

2. Among the 27 products, there were some unqualified products (a smaller amount of unqualified products). How many times can you use a balance scale to find out the unqualified products?

3. Among the 12 table tennis balls, the quality of one table tennis ball is unqualified, and the unqualified table tennis ball is lighter. How many times can you use a scale to find out the unqualified table tennis balls?

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For more information about the PPT courseware "Looking for Defective Products in Discovery Park", please click the "Looking for Defective Products in Discovery Park ppt" ppt tag.

"Finding Defective Products" Discovery Park Flash Animation Courseware 2:

"Finding Defective Products" Exploration Park Flash Animation Courseware 2 This courseware is part of the Hebei Education Edition's Sixth Grade Mathematics Volume 1 Unit 8 Teaching Materials "Finding Defective Products" Flash Animation Courseware for Exploring the Paradise. The content is vivid and vivid, please download it! Keywords: Explore the paradise teaching courseware, find defective teaching...

"Finding Defective Products" Discovery Park Flash Animation Courseware:

"Looking for Defective Products" Flash Animation Courseware for Discovery Park This courseware is part of the Hebei Education Edition's Sixth Grade Mathematics Volume 1 Unit 8 Teaching Materials "Finding Defective Products" Flash Animation Courseware for Discovery Park. The content is vivid and vivid, please download it! Keywords: Explore the paradise teaching courseware, find defective teaching materials..

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Update Time: 2024-10-05

This template belongs to Mathematics courseware Hebei Education Edition Sixth Grade Mathematics Volume 1 industry PPT template

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