Masonry is the construction of structures using various materials like brick, stone and concrete masonry units laid using mortar. The document outlines the detailed lesson plan for a class on masonry materials and tools. It includes the objectives, content, learning resources, procedures and assessment. The procedures involve introducing the topic, discussing what masonry is and its importance. Students also participate in group activities to identify masonry materials and tools used in different infrastructure pictures. The lesson aims to teach students about masonry materials, tools, their classifications and proper use in construction.