Welcome to the Supplementary E-Learning Materials in Physical Science for Senior High School as an Alternative Delivery Learning Materials with the topics on the formation of elements during stellar formation and evolution; the concept of atomic number that led to the synthesis of new elements in the laboratory; intermolecular forces of attraction; structure and function of biological macromolecules; limiting reactants and the amount of products formed; the Aristotelian and Galilean conceptions of vertical, horizontal, and projectile motions; propagation of light (reflection and refraction) as explained by the wave and particle models; photon concept and its practical application; various light phenomena; and the consequences of the postulates of special relativity theory. This interactive e-learning materials were designed, developed, and assessed by researcher, to help students meet the standards of the K to 12 Curriculum while overcoming their personal, social, and economic barriers to learning. This learning resource hopes to engage the learners in guided and independent learning activities at their own pace and time. Furthermore, it also aims to help students acquire the necessary 21st century skills while taking into account their needs and circumstances.