Mathematics / Year 4 / Measurement and Geometry / Shape

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Curriculum content descriptions

Compare the areas of regular and irregular shapes by informal means (ACMMG087)

Elaborations
  • comparing areas using metric units, such as counting the number of square centimetres required to cover two areas by overlaying the areas with a grid of centimetre squares
General capabilities
  • Numeracy Numeracy
ScOT terms

Area,  Irregular polygons

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13 direct matches to ACMMG087 | 7 other related resources
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Video

Exploring mysterious shapes

  • TLF-IDM021134

Join QuanQuan and Jenny as they explore some weird and wonderful shapes! While watching this clip, think about the sides, edges, surfaces and volumes of the shapes that are demonstrated. How are these shapes different from regular 2D and 3D forms?

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Interactive

Introduction to polygons

  • TLF-IDM020204

Try this tutorial to test your knowledge of polygons (straight-sided shapes).

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Interactive

Finding the area of compound shapes

  • TLF-IDL383

Find the area of compound shapes based on rectangles on a grid. Explore how the formula works for finding a rectangle's area. First, estimate the area of a compound shape based on rectangles on a grid. Second, work out the correct formula for finding area by placing rows and columns of squares inside two rectangles. Then, ...

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Online

reSolve: Authentic Problems: Expanded Square

  • TLF-IDM024876

This sequence of four lessons explores concepts around informal area and symmetry. Students design an 'expanded square' where approximately half the area of the original square is flipped to the outside. The lessons provide opportunities for students to devise and use methods to informally measure area, record their mathematical ...

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Text

Sizing Them Up

  • TLF-IDM020722

This resource is a web page containing a short task to explore area of irregular shapes by informal means. Arrange irregular shapes in size order smallest to largest. This resource is an activity from the NRICH website.

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Text

Understanding relationships between the properties of 2D shapes helps visualise and organise spaces in the world Multi-age 3–6 Year B – Unit 12

  • TLF-IDA006131

This 2-week unit unit develops the big idea that understanding relationships between the properties of 2D shapes helps visualise and organise spaces in the world. Students are provided opportunities to: combine and split common shapes; transform two-dimensional and composite figures by reflecting, translating, and rotating; ...

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Text

Understanding relationships between the properties of 2D shapes helps visualise and organise spaces in the world: Multi-age 3–6 Year A – Unit 12

  • TLF-IDA004755

This 2-week unit introduces the big idea that understanding relationships between the properties of 2D shapes helps visualise and organise spaces in the world.

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Downloadable

Tiling problem

  • TLF-IDA003558

Use this diagnostic task to assess if students use an array structure when working out how many tiles fit in a rectangle.

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Text

Inquiry Prompt Ribbon Bow - Calculate

  • TLF-IDA004340

This open-ended task challenges students to carry out a mathematical investigation using a ribbon-bow as a stimulus. They are encouraged to develop their own research questions and investigate possible solutions using using mathematical problem solving and modelling strategies.

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Downloadable

Make a measuring jug

  • TLF-IDA003588

Use this diagnostic task to assess a student's understanding of capacity and the calibrated scale on a measuring jug.

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Downloadable

Leaf task

  • TLF-IDA003570

Use this diagnostic task to assess understanding of area and measuring the area of an irregular shape.

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Online

Area and perimeter: Year 4 – planning tool

  • TLF-IDA003188

This planning resource for Year 4 is for the topic of Area and perimeter. Students estimate and measure perimeter and area using informal and formal units.

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Video

Area and perimeter video

  • TLF-IDA003311

Use this video to connect area and perimeter to real world applications to set the context for why we are learning about area and perimeter.

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Video

For the Juniors: Drawing a floor plan

  • TLF-IDM015824

How do we know what a house will look like before it is built? Discover how house plans work by looking at the design of a house that Hugo's family is going to build. See how a floor plan shows the room layout. See drawings of what the house will look like from different views.

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Interactive

Moon Goats (Geometric reasoning) - ABC Education

  • TLF-IDA005645

As a team, use your understanding of geometric reasoning to transform two-dimensional floor plans into three-dimensional pod houses. See how many unique houses you can build for the Moon Goats. Then, try the Budget Challenge to calculate the cost of different types of houses. Mathematical ideas and strategies this game ...

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Interactive

Sites2See – measurement for primary

  • TLF-IDM016665

Selected links to a range of interactive and print resources for Measurement topics in K-6 Mathematics.

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Online

Shapes and objects: Year 4 – planning tool

  • TLF-IDA003189

This planning resource for Year 4 is for the topic of Shapes and objects. Students build on their knowledge of shape by combining and cutting 2D shapes.

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Video

Fun with fractals

  • TLF-IDM021131

Do you know how to recognise a fractal? Watch this video to find out! What are the examples given of fractals found in nature? Can you think of any others? Why not have a go at doing your own drawing of the Sierpinski Triangle?

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Interactive

Area explorer

  • TLF-IDM012001

This is an interactive resource about calculating the area of a shape presented on a grid. Students are presented with a random figure and are required to calculate its area, in square units. Immediate feedback is provided and the student can make repeated attempts if a question is not answered correctly. The additional ...

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Video

What is a fractal?

  • TLF-IDM021126

Do you know what a fractal is? Basically, fractals are never-ending patterns created by repeated mathematical equations. In this clip, Yuliya, a student at MIT (in the USA) describes the properties of fractals and shows you where they can be found in technology and nature. Have a good look at the world around you and see ...

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