To class example sentences

The portraits of musicians given in the beginning may be supplemented by others that the children can be asked to bring to class.That is why it is preferable to classify materials as good conductors and poor conductors instead of classifying as conductors and insulators.Students can read the story for homework and come to class; or the teacher can read out the story in class; or the students can read out parts of the story in the class, one after the other.Suppose you are about to take an examination and suddenly realise that you have not brought your pen to class.The next reported attempt to classify elements was made by a French geologist, A.Geologists use these properties to classify the minerals.He fully recognized the significance of periodicity and used broader range of physical and chemical properties to classify the elements.She also gives high priority to classes for young musicians.For proper understanding, it would be useful, to classify them into certain common categories.