ACTIVITY22. Multi-word adverbial phrases
1. Type of the activity
① Tasks for receptive skill by knowledge usages
- 이 활동은 시간과 장소를 나타내는 다양한 부사구의 표현을 학생들이 그것들의 공통점을 찾아내어 직접 각 group으로 나누어 보게 하는 능력, 즉, receptive skill의 한 형태인 sorting능력을 요한다.
② Follow up
History and Development of the Activated Sludge Process
- The activated sludge process presently represents the most widespread technology for wastewater purification.
- The invention of the activated sludge process is connected with the efforts of British and American engineers at the end of the last century to intensify biological purification in fixed-film systems.
: wastewa
activity
Teacher let the students remind the expressions which students learned.
Teacher give the instructions, and show the moving picture to the students.
After watching the movie, teacher let the students discuss and present the feeling.
Teacher give the pictures on the screen.
Teacher let the students express feeling with body.
Teacher give a praise.
Students tell the words
this, we can know that axial impeller is not suitable. Also, because of wide width of tank, it has poor mixing.
Second, there is a problem with chemicals. PAC is injected with Cl2, so activation of Cl2 must be restricted.
Also, using alum may cause settling.
Alum lowered pH in localized area. To overcome this problem, we need more alkali materials and it means lots of cost.
Type)과 능동형(AM, Active Matrix Type)으로 구분할 수 있으며, 유기물 층의 발광재료에 따라 저분자 OLED와 고분자 OLED로 분류된다. OLED는 유기물 층의 재료에 따라 저분자형과 고분자형으로 분류 가능한데 재료의 특성이 잘 알려져 개발이 쉽고 조기 양산이 가능한 저분자 OLED가 미국 Eastman Kodak이 소유하고 있