Which option would be the least effective example of integrated curriculum that includes language arts instruction?

The choice of a science teacher creating a study guide for a test using leading questions stands out as the least effective example of integrated curriculum that includes language arts instruction. Integrated curriculum involves making connections across subjects to enhance learning experiences. In this case, while leading questions can improve comprehension, the primary focus remains on test preparation rather than infusing language arts principles into the science content.

In contrast, the other options demonstrate a more explicit integration of language arts into different subjects. For instance, demonstrating previewing skills in history not only aids in text comprehension but also covers essential language arts strategies. Incorporating poetry into a science unit on life cycles highlights creativity and literary analysis while exploring scientific concepts. Leading a spelling and grammar workshop specifically for science terms allows students to strengthen their language skills in the context of their science studies.

Thus, while leading questions in a study guide can be useful, they do not effectively show the blending of language arts with another subject, making this choice the least aligned with the integrated curriculum concept.