If you haven't played roll-a-word, it's very easy. The kids roll a die, read the word, and follow the directions on the sheet and record the word. In the plural/singular noun roll-a-word, they had to change the singular noun to plural. Cross off the word, repeat until all words are recorded. Oh, and you go bottom to top. It's a nice hands-on activity and not a whole lot of prep. After a few times whole group, the kids should be ready to do this independently. I wanted them to have to really think about what they were doing and not just read and write the words. The last sheet has nouns that you add s, -es, and change the y to i. It really let me know who "got" it pretty quickly.
I'm going to let the inflectional endings one be an independent center this week. I thought they had that down, but I've been seeing mistakes in their writing. This packet has a lot of different ones ranging from easy to difficult.
Here are the links if anyone is interested.