My students have individual wipe boards and I will have them write a word and then put their finger over the 's and ask themselves is this one or more than one? They seem to have more trouble with plural than singular because they want to add an s to everything. I love the pp of the skid mark. Really, just practice, practice, practice

You know what that makes?
You could call them to the board or whatever if you don't have individual boards. It's a difficult concept. Let's face it, many adults get it wrong.
