6 secret codes you can teach kids

Turn your grandchildren into spy kids with these super fun, top-secret codes.

This article originally appeared on grandparents.com. To learn more click here.

Do you want to know a secret? Speaking or writing in code with your grandchildren isn’t just a fun way to pass the time—it’s a wonderful activity for building their social and abstract thinking skills. And it’s a great way to bond.

So the next time you and the kids get together with secrets to share, try using one of these six clandestine languages or ciphers. They’re easy to learn, appropriate for all ages, and just plain fun.