2D perimeter and area

Year 5 Maths – Unit 3: Lessons 1–5

Australian Education Research Organisation(AERO), www.edresearch.edu.au

3d Shapes
Credit: neotam/pixabay.com

Developed in partnership between AERO and Ochre Education, these lesson resources support the use of effective, evidence-based practices and address the learning expected in the Australian Curriculum. An exemplar unit plan provides guidance on the structure, sequence and decision-making made during the planning process.

This sequence of five lessons teaches students about perimeter and area of shapes, as well as how to calculate them.

Lesson 1 To calculate and measure perimeter

www.edresearch.edu.au/guides-resources/ochre-resources/year-5-maths-unit-3-lesson-1

Students will learn to calculate perimeter in simple and compound shapes.

Lesson 2 To calculate the area of rectangles

www.edresearch.edu.au/guides-resources/ochre-resources/year-5-maths-unit-3-lesson-2

Students will find the area of rectangles by counting squares and using arrays and multiplication. They will also compare the area of different rectangles, including squares.

Lesson 3 To calculate the area of basic compound shapes

www.edresearch.edu.au/guides-resources/ochre-resources/year-5-maths-unit-3-lesson-3

Students will learn to calculate the area of basic compound (rectilinear) shapes by splitting them into two or more rectangles.

Lesson 4 To compare the area and perimeter of rectangles

www.edresearch.edu.au/guides-resources/ochre-resources/year-5-maths-unit-3-lesson-4

Students will compare the area and perimeter of rectilinear shapes.

Lesson 5 To calculate the area of non-rectilinear shapes

www.edresearch.edu.au/guides-resources/ochre-resources/year-5-maths-unit-3-lesson-5

Students will estimate the area of shapes that are not rectangles and are presented on a grid. Then they will use a mixture of calculating the area of rectangles and counting the additional parts to estimate the total area.