Gather picture books that have short sentences and detailed illustrations. Read these books aloud to the class and emphasize sentences with easily distinguishable verbs and nouns. Pick examples from these books and act them out in person. Use examples that are relatable for students of this age group, such as the verb "to throw," as in "He threw the ball over the schoolyard." You can even exaggerate your motions by emphasizing the word "threw" with your hands so that the students understand which word is most important in the sentence.
Split the sentences from these books into single words and write them on flash cards. On one side of the flash card, write down a word from the sentence; on the other side of the flash card, write down what part of speech the word demonstrates. Allow students to interact with each other by giving each of them flash cards. This is an effective method for students to quiz each other and to familiarize themselves with grammar because the answers are right at their disposal.
Write down the sentences from the picture books onto the chalkboard and point out the way the subject and object of a sentence relate to parts of speech. For example, "The dog bit the man" is a simple sentence with an easily identifiable subject and object. This method can help students not only differentiate between the subject and object, but what action the subject is doing to the object in order to spot the verb.
Evaluate students' knowledge of what they learned by testing them on the parts of speech in sentences. Take the examples from the storybooks and tell them to identify the parts of speech present in each sentence. By using the same examples throughout, the student should become familiar at identifying the correct parts of speech. You can make it easy and write a sentence out on the chalkboard and let the classroom collectively call out answers. Do not overcomplicate matters by explaining the more intricate details of grammar, such as the difference between coordinate conjunctions and subordinate conjunctions, but rather focus on the easier conjunctions, such as "and" or "but."