This document discusses the interdisciplinary teaching approach. It involves combining two or more subjects into one class. Examples of interdisciplinary instruction include knowledge-based, literacy-based, inquiry-based, and project-based approaches. The document then provides an example lesson plan on an "Energy Pyramid" theme that integrates concepts from various subjects like reading, math, PE, science, Filipino, and religion. It outlines objectives, activities, and assessments for teaching about energy transfer in ecosystems through an interdisciplinary lens.