Free boundary punctuation worksheets to help your students improve their knowledge in English. Boundary punctuation refers to punctuation at the start and end of sentences – capital letters, full stops, question marks or exclamation marks. When children start writing stories in grade 1 and grade 2, they begin to learn that sentences start with a capital letter and end with a full stop (or question mark or exclamation mark). It is important for them to grasp them so they can move on to more challenging punctuation concepts. I still see students in grade 4 and grade 5 miss capital letters to start sentences and have full stops in the wrong places! Use these free punctuation worksheets to give your students the repetition they need.