Defining and Using the Words Examine, Resource, and Pollution

Khan Academy

This educational video introduces and defines three specific vocabulary words: "examine," "resource," and "pollution." Using a "blackboard" style visual approach with colorful handwritten text and simple illustrations, the narrator breaks down each word by identifying its part of speech (verb or noun), providing a clear definition, and explaining its etymology or morphological structure (such as the suffix "-tion"). The video explores the meanings in depth before showing them in context. For example, it connects "examine" to the familiar concept of taking an "exam," expands the definition of "resource" from natural materials to school libraries, and breaks down "pollution" as the act of dirtying the environment. Each segment concludes with an illustrated sentence that demonstrates the word being used correctly in a real-world scenario. Teachers can use this video as a versatile tool for both English Language Arts and Science instruction. It serves as an excellent model for how to learn new vocabulary—by defining, connecting to known words, and using in context. Additionally, the specific words chosen bridge nicely into science units regarding scientific observation (examining), natural resources, and environmental stewardship (pollution).