[经济金融] How to talk to sons

Hi I'm Gina. ' J' Y1 O& |$ v4 Q, }
I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
* M9 Y8 P6 J2 o# swww.csuchen.deI have a question, maybe some of you can help me?
7 X$ }+ O- l, K: J2 G. ?3 m  ~At what age should a parent teach their son about ‘sex’ if there is no father around or would it be better for the kid to have a male family member to do this?
8 \: G% R5 Q/ W人在德国 社区It really bothers me because i've found adult magazine in their room today.
5 Z4 h4 p# u2 `" T4 ZShould I talk to them by miself or ask my brother to do it?
& ~* x4 m+ o$ x# I! O 人在德国 社区/ Y! ~" K/ @' w; d
Hope someone had the same problem and can advise me anything. # h- t5 d( R3 f4 u; ^
By the way, here is the photo of my sons:
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Happy mother of two great sons...