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Perimeter and Area

Perimeter and Area. By F. West. Objectives. Students will understand the meaning of perimeter & area and apply it in problems. GLEC Standards and Benchmarks M.UN. 03.05 II .3.2 3 grade math. Learning Resources and Materials. Ruler

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Perimeter and Area

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  1. Perimeter and Area By F. West

  2. Objectives Students will understand the meaning of perimeter & area and apply it in problems. GLEC Standards and Benchmarks M.UN. 03.05 II .3.2 3 grade math

  3. Learning Resources and Materials Ruler Graph paper

  4. Methods and Procedure The teacher will introduce vocabulary, and demonstrate how to solve perimeter and area problems.

  5. Introduction Step 1. Activate Prior Knowledge What do you know about perimeter and area?

  6. What is perimeter? The distance measured around an object.

  7. Look at the objects below You can use a ruler to measure shapes.

  8. Perimeter Use the graph paper to draw some triangles and measure them.

  9. Perimeter The formula to solve a triangle is P = a+b+c

  10. Perimeter A B C

  11. Find the Perimeter 10cm 10cm 8cm 8cm 10cm 8cm

  12. What is the area? The number of square units needed to cover a shape

  13. What is the formula to solve the area of a triangle? A=½ hxb or A= hxb 2 6cm 4cm

  14. Area

  15. Find the Area 5cm 3cm 4cm 4cm Area = Area =

  16. Find the perimeter P= 2L+2W 5 5 5 5

  17. Find the Perimeter 5cm 11cm 5cm 11cm

  18. Find the Area A=LxW 12 cm 4cm

  19. Assessment Compute the area, go to http://www.mathgoodies.com/lessons/vol1/area-triangle-part3.html Compute the perimeter and area of shapes, go to http://www.mathgoodies.com/lessons/vol1/perim_part3.html

  20. Resources http://www.helpingwithmath.com/printables/worksheets/geo0601area02.htm http://www.mathgoodies.com/lessons/vol1/area-triangle-part2.html http://www.michigan.gov/documents/mde/3rd_Math_357689_7.pdf http://office.microsoft.com/en-us/images/?CTT=97

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