Perimeter and length 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about perimeter and lengths of shapes. Question 1Change answer a) The perimeter of a square field is 800 m. The length of one side is m Question 1Change answer b) One side of a rectangle is 8 cm and the total perimeter is 20 cm. What are the measurements of the other sides? b) One side of a rectangle is 8 cm and the total perimeter is 20 cm. What are the measurements of the other sides? cm cm cm Question 2Change answer c) The perimeter of a square picture is 240 cm. How long is one side? cm Question 3Change answer d) The length of one side of a square scarf is 95 cm. d) The length of one side of a square scarf is 95 cm. What is the perimeter of the scarf? cm Question 4Change answer e) A rectangular garden has a perimeter of 22 m. One side is 4 m. What do the other sides measure? e) A rectangular garden has a perimeter of 22 m. One side is 4 m. What do the other sides measure? m m m Question 5Change answer f) One side of a regular pentagon is 9 cm. What is the perimeter? cm Task administration: This task is completed with pencil and paper or online (WITH automarking). Level: 4 Curriculum info: Maths, Geometry and Measurement, Measurement Keywords: perimeter, rectangles, squares, 2-dimensional shapes Description of task: Students answer questions about perimeter and length of square and rectangle shapes. Curriculum Links: This resource can help to identify students' understanding of side lengths and perimeter of shapes. Learning Progression FrameworksThis resource can provide evidence of learning associated with Measurement sense, sets 6-7 within the Mathematics Learning Progressions Frameworks.Read more about the Learning Progressions Frameworks. Answers/responses: Y6 (07/1997) Y7 (07/1997) a) 200 easy easy b) 8; 2; 2 [In any order] moderate easy c) 60 moderate moderate d) 380 moderate moderate e) 4; 7; 7 [In any order] moderate moderate f) 45 difficult moderate Diagnostic and formative information: Common error Likely calculation Likely reason a) c) d) 400 120 190 800 ÷ 2 240 ÷ 2 95 x 2 Assumes square has 2 sides. f) 18, 36, 54, etc. 18 x 2, 18 x 4, etc. Doesn't know sides in pentagon. Calculating the perimeter Finding area and perimeter Measuring the extension How big is the community hall? Finding the perimeter Fencing the field Using string lines Using cubes Garden perimeter Making road signs Changing perimeter Area of 3 fields Same area, different lengths Smallest perimeter Making the largest perimeter Area and perimeter of four shapes Correcting mistakes Extending the garden Fencing paddocks
