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Published byBrice Ellis Modified over 6 years ago
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Surface Area Developing: Define the term surface area.
Secure: Calculate the surface area of 3D objects. Exceeding: Explain how surface area affects the rate of absorption. Entrance Activity Tool Box – Key Words
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Key Word Alert! Surface Area The surface area of a solid object is a measure of the total area that the surface of the object takes up. (cm2) Arrange the boxes in order of larges surface area to smallest surface area. A E C B D
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Calculating Surface Area
Teacher Explanation Calculating Surface Area To calculate the surface area of a 2D object we need to multiply the height by the length. Width 5 cm Height x width = Surface area 30cm x 5cm = _____cm2 30cm x 5cm = 150cm2 Learning activity Height 30cm Calculate the surface area of the following objects: Piece of paper, Mini whiteboard, Large whiteboard, Table, Any other square objects you can find. (10 mins)
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Calculating Surface Area
Teacher Explanation Calculating Surface Area When calculating the surface area of a cube or cuboid, we need to dismantle the object and calculate each side as a single 2d shape. Top 5cm 8cm Back 2cm 5cm Right side 8cm 2cm Left side 8cm 2cm Bottom 5cm 8cm Front 2cm 5cm
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Learning Activity Select three to five cuboids from the list below and calculate the area of each one in your books.
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Calculating Surface Area
Teacher Explanation Calculating Surface Area Your teacher will provide you with a range of boxes, uses these to practice your calculation skills. Try and find the surface area of 3 different sized boxes. Width 5 cm Height x width = Surface area 30cm x 5cm = _____cm2 30cm x 5cm = 150cm2 Height 30cm
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Plenary Creating questions Create your own question regarding surface area. Include a two part question, a mark scheme, and then get someone to answer the question.
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