"The Greatest Common Factor" The meaning and properties of fractions PPT courseware 2

Description

"The Greatest Common Factor" The meaning and properties of fractions PPT courseware 2

1. Create situations and elicit research questions

If you want to use square floor tiles with a side length of a whole decimeter to cover the floor of the storage room (the floor tiles used must be whole pieces), how many decimeters of floor tiles can you choose? What is the maximum side length in decimeters?

Please take a closer look at Xiao Ming's home decoration requirements, what valuable information you have obtained, and communicate with everyone.

① Use square floor tiles to pave the floor.

②The floor tiles used must be whole pieces and cannot be cut into half pieces.

③The side length of the square must be an integral number of decimeters.

2. Group cooperation, exploring and solving problems

1. ① Use school tools to pose and draw. ② Share your findings with your classmates in the group.

2. Conduct group inquiry activities and collect learning resources.

3. Whole class discussion:

① Use learning tools to solve problems and find one or several side lengths of a square, but the maximum side length is not found.

Make a pendulum: Use small squares with a side length of 1dm to form a rectangle. Draw a picture: Use the existing squares to draw a small square within the large rectangle.

②Use the knowledge of common factors and the greatest common factor to solve problems. In order for the squares covering the ground to be complete, the side lengths must be common factors of 12 and 16, and the largest side length is their greatest common factor.

Because: the common factors of 12 and 16: 1, 2, 4. The greatest common factor is 4.

So: the side length of a square can be 1dm, 2dm, or 4dm. The maximum side length is 4dm.

3. Strengthen application and consolidate practice

1. There are two small sticks, the lengths of which are 12 cm and 18 cm respectively. They need to be cut into small sticks of the same length. There will be no leftovers. How many centimeters is the longest of each small stick?

2. Teacher Wang bought some fruit candies and lollipops and distributed them equally to the students in one group, and they were all finished. How many students can there be at most in this group? How many fruit candies and lollipops does each person get?

4. Assign homework

Homework: Exercise 15 on page 63, questions 5 and 6.

Keywords: Courseware on the meaning and properties of fractions, greatest common factor courseware, PPT courseware for fifth-grade mathematics volume 2 of the New People’s Education Press, download of fifth-grade mathematics slideshow courseware, downloading PPT courseware on the meaning and nature of fractions, downloading PPT courseware on the greatest common factor ,.ppt format

For more information about the "The Meaning and Properties of Fractions Greatest Common Factor" PPT courseware, please click the "The Meaning and Properties of Fractions ppt Greatest Common Factor ppt" tag.

"Finding the Greatest Common Factor" PPT courseware on the meaning of fractions:

"Finding the Greatest Common Factor" PPT courseware on the meaning of fractions. Find all the factors of 12 and 18, and communicate with your peers how you found them. The common factor of 12 and 18 is 1236. The common factor of 12 and 18 is 6. Practice 1. Find all the factors and greatest common divisors of 9 and 15, and...

"Common Factors and the Greatest Common Factor" Common Multiples and Common Factors PPT Courseware 2:

"Common Factors and the Greatest Common Factor" Common Multiples and Common Factors PPT Courseware 2 Teaching Objectives 1. Recognize the common factors and the greatest common factor, and be able to represent the factors of two numbers and their common factors respectively in the set diagram. 2. Can use enumeration method to find the common factors of two numbers within 100..

"Common Factors and the Greatest Common Factor" Common multiples and common factors PPT courseware:

"Common Factors and the Greatest Common Factor" Common Multiples and Common Factors PPT Courseware Teaching Objectives 1. Through comparison, analysis, induction, generalization and other thinking activities, discover and master the maximum of two numbers that are mutually prime and two numbers that are related to multiples Using the method of common denominators, develop students’...

File Info

Update Time: 2024-09-16

This template belongs to Mathematics courseware People's Education Press fifth grade mathematics volume 2 industry PPT template

Preview