A good exercise for a child to practice writing sentences involves drawing a picture and writing a corresponding sentence to explain what is in the picture. Children can also fill in the blanks of sentences using vocabulary or sight words.
Encourage young writers to practice by having them write about topics they relate to personally, so they can draw upon their prior knowledge. The activity should be connected to the student's readiness level and stage of writing development. Keep in mind that children follow distinct stages of literacy development, and that children may initially spell words incorrectly. This is perfectly normal and can be corrected later, asserts Reading Rockets.