[经济金融] How to talk to sons

Hi I'm Gina.
) ?" C  f- S: W$ O  T  f( Dcsuchen.deI'm mother of two wonderful 10 years sons. Their father has left us 8 years ago.
& ?  }9 s$ _9 U) ]$ e2 k) qI have a question, maybe some of you can help me?
7 M" `1 M' e2 b+ m3 gcsuchen.deAt 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? 6 V& \0 W0 v4 p+ _8 t1 Y$ Q4 v* V  D
It really bothers me because i've found adult magazine in their room today. % T5 o( p( e. i" l
Should I talk to them by miself or ask my brother to do it?
0 A' }5 G1 G) R7 ?8 ^
0 F! T0 q; I4 {% q4 gcsuchen.deHope someone had the same problem and can advise me anything. 人在德国 社区& R2 v1 I9 U: |: x
By the way, here is the photo of my sons:
! n0 K  k0 W1 ~& O, C) M
Happy mother of two great sons...