-Tree leaves go through seasonal changes.

-Chlorophyll  provides leaves with their green color in the warm months.

-The type and amount of pigment present determine what colors the leaves are likely to be.

-Leaves fall off due to a layer that forms between the leaf and the stem.

입력">

■ 활동명(행사명) : 동아리 정기 모임
■ 일시 : 2026년 9월30일 수. 10:00~12:00
■ 장소 : 동작캠퍼스 2층 기쁨공간.
■ 참가자 : 김종구 회원외 2명.
■ 주요내용
교재 P180~187

 Edison's phonograph

< A Brief summary>

- Edison's invention of the phonograph initiated the history of sound recording.

- Edison and his staff discovered a method of recording sound while working in his laboratory.

- Edison thought that his phonograph would be useful both for homes and businesses.

- After designing and producing a model, Edison made additional phornographs fer commercial use.

A tree's changing leaves

< A brief summary>

-Tree leaves go through seasonal changes.

-Chlorophyll  provides leaves with their green color in the warm months.

-The type and amount of pigment present determine what colors the leaves are likely to be.

-Leaves fall off due to a layer that forms between the leaf and the stem.

입력">

-Tree leaves go through seasonal changes.

-Chlorophyll  provides leaves with their green color in the warm months.

-The type and amount of pigment present determine what colors the leaves are likely to be.

-Leaves fall off due to a layer that forms between the leaf and the stem.

입력">

■ 활동명(행사명) : 동아리 정기 모임
■ 일시 : 2026년 9월30일 수. 10:00~12:00
■ 장소 : 동작캠퍼스 2층 기쁨공간.
■ 참가자 : 김종구 회원외 2명.
■ 주요내용
교재 P180~187

 Edison's phonograph

 (에디슨의 축음기)

< A Brief summary>

- Edison's invention of the phonograph initiated the history of sound recording.

- Edison and his staff discovered a method of recording sound while working in his laboratory.

- Edison thought that his phonograph would be useful both for homes and businesses.

- After designing and producing a model, Edison made additional phornographs fer commercial use.

A tree's changing leaves

(나뭇잎의 변화)

< A brief summary>

-Tree leaves go through seasonal changes.

-Chlorophyll  provides leaves with their green color in the warm months.

-The type and amount of pigment present determine what colors the leaves are likely to be.

-Leaves fall off due to a layer that forms between the leaf and the stem.