Adolescence /ˌæd

syllabus /ˈsɪl.ə.bəs/ noun [ C ] plural syllabuses or syllabi
(a plan showing) the subjects or books to be studied in a particular course, especially a course which leads to an examination
Which novels are on the syllabus this year? Compare curriculum
task /tɑːsk/ /tæsk/ noun WORK
1. [ C ] a piece of work to be done, especially one done regularly, unwillingly or with difficulty
We usually ask interviewees to perform a few simple tasks on the computer just to test their aptitude.
The government now faces the daunting task of restructuring the entire health service.
task /tɑːsk/ /tæsk/ noun SPEAK ANGRILY
2. take sb to task
to criticize or speak angrily to someone for something that they have done wrong
She took her assistant to task for/over her carelessness.
theory /ˈθɪə.ri/ /ˈθɪr.i/ noun [ C or U ]
1. a formal statement of the rules on which a subject of study is based or of ideas which are suggested to explain a fact or event or, more generally, an opinion or explanation
economic theory scientific theory Darwin's theory of evolution
He has a theory that the hole was caused by a meteorite.
2. in theory
If something is possible in theory, it should be possible, but often it does not happen in that way
In theory, the journey ought to take three hours, but in practice it usually takes four because of roadworks.