TH8191A3 - Mathematics learning materials A series of finding the surface area of a sphere using a cylinder and a sphere. - Google Patents

Abstract

DC60 (28/05/56) Mathematics series learning materials Finding the surface area of a sphere using a cylinder and a sphere It is a medium that teachers use in teaching and learning in the classroom. Which looks like a wooden stick player with a cylindrical surface All of them are smooth surfaces to be suitable for stringing. Which the player has a wooden cylinder with a circular base on both sides It has the length of the diameter of the cross-section of the circular base and the height of the player. One piece of the same length is the same length, and the second is of the shape of a round wooden player with all surfaces. Smooth to be suitable for winding rope In which a round wooden player has the same height and length of the diameter And the height and length of the diameter of Round wooden player The size is equal to the height and length of the player's diameter, 1 piece of wooden stick directly in the center of the round stick player. There is a groove around. To show the division The center of the round wooden player And the top area of the round wooden player There is 1 small wooden stick to make it the starting point for winding small cotton rope. And there is a small rope that A cotton rope Its length is the same as its length when it is half wrapped around the cylinder and has a The length is equal to the length when the player is half the round wooden player. Which this invention is suitable for Use as a medium for teaching mathematics in school On the formula for finding the surface area of a sphere and Relationship of the sources of the spherical surface area formula. And facilitate teachers in Choose to use mathematics media that can be used in learning and teaching in the classroom correctly and appropriately to build knowledge and understanding of students to create knowledge that is a proof of theory. From concrete to abstract Is a quality medium according to the principles of mathematics Materials that are strong, durable, reduce costs and reduce the time required to fabricate multiple media and facilitate storage. Build creativity And a good attitude to learn about mathematics for students Mathematics learning materials A series of determination of the surface area of a sphere using a cylinder and a sphere. Finding the surface area of a sphere using a cylinder and a sphere. It is a medium used by teachers in classroom teaching and is characterized by a player, a cylindrical wooden stick with two base cross-sections and a height equal to the length of the One piece of cylinder diameter and a round wooden player at the same height is the same length as the length. Of 1 piece of diameter directly. Round wooden player round has a groove around to show Divide the center of the round wooden player. And the top area of the round wooden player There is 1 small wooden stick and a small cotton rope string equal length to the length when wrapped around the stick. The cylinder is half and its length when intertwined. A wooden cylinder player with Both sides of the base cross-section and the height are equal to the length of the diameter of the cylinder 1 piece, and the height of the round wooden player is the length equal to the length of the diameter 1 piece directly in the center of the wooden player. Round A groove is made around it to show the centering of the round wooden player. And the top area of the round wooden player There is 1 small wooden stick and a small string that is Cotton rope is the same length as the length when wrapped in half, and the length when wrapped. Thousands of half round wooden players Which this invention is suitable for use as a teaching medium Mathematics class on the formulas for finding the surface area of a sphere and the relationship of its sources, finding the surface area of a sphere, and facilitating the teachers in choosing the mathematics materials used in their teaching. In the classroom, correctly and appropriately build students' knowledge and understanding of the proof of theory from concrete to abstract. It is a medium of quality, mathematically correct, material that is strong, durable, reduces costs and reduces the time it takes to create a media multiple times and is convenient for storage. Learn about mathematics for students.

Claims (1)

Disclaimers (all) that will not appear on the advertisement page: 1. Mathematics learning materials A series of spherical surface area determination using cylindrical and spheres is characterized by a cylindrical stick player (1) with two base cross-sections (2) and their height equal in length. Of the diameter of the wooden cylinder player (1) amount 1 piece and the round wooden player (3) at the height there is The length is equal to the length of 1 piece of diameter directly in the center of the player. A round stick (3) is made. The surrounding groove (5) shows the centering of the round wooden player (3) and the top area of the club player. Round shape (3) has 1 small stick (4) and a small string of cotton rope (6) in length. Equal to the length when wrapped in a wooden cylinder (1) is half and the length when wrapped in a wooden player (3) half sphere To describe and relate knowledge of the formula for the surface area of a sphere And the relation of the source of the spherical surface area formula Will take into account the relationship of areas Cylindrical stick player (1), round wooden player area (3) and length of cotton string (6) used to wrap