This document outlines the key concepts of dialectical materialism including dialectics, materialism, and Engels' three laws of dialectics. It defines dialectical materialism as the view that ideas and thoughts change due to the movement and existence of matter. Materialism holds that the world is material and phenomena consist of matter in motion according to natural laws. Engels' three laws of dialectics are described as the law of unity and conflict of opposes, the law of passage of quantitative to qualitative changes, and the law of negation of the negation. Examples are provided for each law.