SPaG Punctuation

For SPaG this week, my group and I have created a D.L.O. about punctuation like using comma's and full stop's. In this activity we had to fix some sentences like for example "Lets eat Mrs Anderson!" that just tells me that we are going to to Mrs Anderson. When I fixed it and put a comma between eat and Mrs, this is what it sounded like "Lets Eat, Mrs Anderson!" For this activity I was learning to understand how to put punctuation in the right place, to make it make sense.