please answer my question!~

1——what does mean 上in this sentence?and please tell me the meaning of those?
他课上得非常好。
他上课非常好。

－“上课”
拼音：shàng kè
英译：have lessons
词义：学习者把自己的知识传授给被学习者的过程。

－“上”：

词义：<动>去；到。

英译：go to；

例句：

1.去上课

2.上街去买菜

3.您这么急是上哪儿去呀？

2_what does mean 管in this sentence?
管孩子还是不管孩子。
别管孩子

－“管”：

拼音：guǎn

词性：动词

词意：管教；负责，经理：管理。manage

例句：

1.管别人不如管好自己。

please answer my question!~

1——what does mean 上in this sentence?and please tell me the meaning of those?
他课上得非常好。

他上课非常好。

上课=have lessons    

同学们上课 上得很认真。=同学们听课听得很认真。
The students are having class ,they are very concentrated. Here 上 means have.

他（上）课上得非常好。=他很会教学生。（他He must be a teacher.）

His lessons are very good(interesting). He is good at giving classes. Here 上 means give.

2_what does mean 管in this sentence?
管孩子还是不管孩子。  To be strict with children or just let them grow freely.
别管孩子  Don't restrain children.  (Please don't be too strict with your children.)

管教  父母管孩子=父母管教孩子 Parents discipline and teach their children to beheave themselves.

（Japanese　躾）老师管孩子 Teachers educate their students.

管理  管理一个公司=经营一个公司 manage a company
 

管：manage，teach and disciline;educate