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Area

Area. Prior knowledge What is area?. The size of a surface. Area. Different for each shape. Involves multiplication. The backyard area. Is measured in square units. The area of a shape is the amount of space inside it.

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Area

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  1. Area

  2. Prior knowledge What is area? The size of a surface Area Different for each shape Involves multiplication The backyard area Is measured in square units

  3. The area of a shape is the amount of space inside it.

  4. When you measure the amount of carpet to cover the floor of a room, you measure it in square units. ? Would the area of your bedroom or the area of your house be greater? ? You’re right! The area of your house is greater than the area of your bedroom.

  5. Area of a square The area of a square is equal to its side-length multiplied by its side-length.  That is: Consider a square that has a side-length of 4 cm. Using the method of counting squares, we find that the area of the square is 16 cm2. Clearly, the square contains 4 rows of 4 squares.  Therefore:

  6. http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/perimeter_and_area/index.htmlhttp://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/perimeter_and_area/index.html online activity for Area and perimeter

  7. Differentiating the content and the environment Finding the area of composite shapes

  8. From Latin compositus, to put together Composed of separate parts Composite Compound Not simple A complex material A structure or an entity made up of distinct components.

  9. Composite Shapes A figure (or shape) that is made up of 2 or more shapes A figure (or shape) that can be divided into 2 or more shapes. If a figure is made from two or more geometric figures, then it is called a Composite Figure.

  10. Composite From Latin compositus, to put together

  11. The story of the day One day Mariama went to visit her friend Sally. Sally had a sister who was doing her maths homework and came and asked sally and Mariama to help her with her homework. She was studying area of composite shapes and did not know the meaning of the word composite. So Mariama asked Sally’s sister to come with her to her Maths class and learn about composite shapes.

  12. What does the word composite reminds me of? Where can I find composite shapes at school? Making connections with the real world.

  13. Classify the following:

  14. Task Divide students into groups of 2. Each group chooses a letter and go the area that is written behind the chosen letter. Each area has a composite shape. Each area has a different question for you to answer. Students have to go their area and take the measurements of the composite shape and calculate the area. The areas are as follow: 1- Canteen 2- Tennis court 3- Back of the library 4- Front of the library 6- Outside the science staffroom 7- Stay in the library (worksheet). Students come back and the next day each group teaches the class for 5 minutes and explain their problem and how they did the measurements.

  15. A B Back of the Library D Tennis court Front of the library C Canteen Area I Canteen E Worksheet G Outside the science staffroom F G worksheet H Worksheet

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