[经济金融] How to talk to sons

Hi I'm Gina. ! c6 e: i  g* }1 j; Z9 f( E& Q
I'm mother of two wonderful 10 years sons. Their father has left us 8 years ago. 9 @7 h! i) S2 h2 c8 u; X
I have a question, maybe some of you can help me?
& f; A' A' a( \' XAt 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?
4 {% s, v8 J8 U6 M$ E  n& ^- z/ QIt really bothers me because i've found adult magazine in their room today.
( O  m  e6 i6 J9 o  w5 W* q人在德国 社区Should I talk to them by miself or ask my brother to do it?
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4 Z4 l" [: i" Q/ m: f) {/ q5.35.249.64Hope someone had the same problem and can advise me anything. * j0 A% ^& J. h5 [1 U
By the way, here is the photo of my sons: & z7 {1 Y, b8 F, j/ z- |8 o
Happy mother of two great sons...