Distinguish between objects and materials, and understand that grouping (classification) helps us study properties.
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Illustration of right vs wrong materials for a tumbler.
Materials are chosen based on their properties and the object's purpose.
Hook explaining why material choice matters.
Imagine trying to hold water in a tumbler made of cloth. It would leak instantly! This is why we don't use paper for cooking pans or cloth for water glasses.
Definitions of object, material, and classification.
An object is a thing we use in daily life, while a material is any substance that is used to create an object.
Historical connection to Harappan pottery.
Flashcards for Object, Material, Classification.
Fill in the blank exercise for material and classification.
Any substance used to create an object is called a . The method of arranging objects into groups based on common properties is known as . When materials have a shiny surface, typically seen in metals, they are said to have a appearance. If you can see clearly through a material like glass or water, it is called . On the other hand, materials like wood through which you cannot see at all are called . Some substances disappear completely in water, meaning they are . Ultimately, anything that occupies space and has mass is defined as , and the exact amount of space it takes up represents its .