Reese Witherspoon has spoken to her children about the destructive effects of domestic violence.

The 'This Means War' actress - who has two kids, Ava, 12, and Deacon, eight, from her marriage to ex-husband Ryan Phillippe -finds the concept of spousal abuse "foreign" to her life but she thinks it is important to teach her offspring it can happen to anyone.

She said: "We (me and the kids) talk about domestic violence and what that means. Although the concept is somewhat foreign to them, they're starting to understand that this happens to families in our country and all throughout the world."

The 35-year-rold beauty - who was born in New Orleans, Louisiana - hopes her talks will show Ava and Deacon what is "absolutely not acceptable".

She told People.com: "We talk about what is abuse. I think it's important to talk to our daughters - and our sons - in order to educate them at an early age about what's appropriate and what is absolutely not acceptable."

However, Reese admits her children are more knowledgeable than her on some issues, and she can no longer help Ava with her homework because it is too advanced.

She said in an interview with UK TV show 'Daybreak': "We have really funny dinner conversations now, and they know more about certain topics than I ever, ever knew. And certainly I can't keep up with her homework any more.

"My daughter will ask me something about famous composers, and I have no idea what she's talking about. So that's kind of nice - it's like I'm learning from them and it's kind of nice being a mum of older kids."