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The Calculating perimeter skill in Grade 3 Geometry learning involves teaching students how to measure the distance around a 2D shape. This means adding up the lengths of all sides of polygons, such as rectangles, squares, and triangles. It introduces the concept of perimeter as a foundational geometric measurement, emphasizing practical application and problem-solving with simple shapes.
To test a Grade 3 student's ability to calculate perimeter, present them with simple shapes such as squares, rectangles, and triangles. Provide the lengths of sides in whole numbers and ask the student to add these lengths together to find the total perimeter.
To train Grade 3 students in calculating perimeter, start with simple shapes like rectangles and squares. Use hands-on activities such as measuring objects or playground areas with rulers or measuring tapes. Incorporate interactive games and worksheets that focus on adding side lengths.