Geometry is known as one of the earliest forms of mathematics. It is an organised, logical and coherent system which involve the study of shapes, space and measurement. It is the study of 1D (lines), 2D ( planes) and 3D ( solids) shapes. Teaching geometry is central to mathematical processing and understanding as well as this it provides us with real life problem solving opportunities.
Concepts, Skills and Strategy:
Concepts- an organised, logical and coherent system for the study of shape, space and measurement.
Skills- the skills needed in geometry are communicating, drawing, naming, the ability to recognise similarities and differences, reading and navigating maps, visualising, modelling, thinking and reasoning.
Strategy- useful strategies for geometry include: sorting and classifying shapes, modelling, creating a net of a shape, drawing and building shapes with play dough, clay or any other material.
Misconceptions:
There is one common misconception when it comes to geometry and that is the understanding that a piece of paper can be mistaken for a 2D shape when in fact it is known to be a 3D shape because of it's depth and thickness. Furthermore, a paper is not a rectangle although it can be described as having a "rectangular shape" it is a " prism".
Resources:
According to the Measurement and Geometry section in ACARA Geometry is found in the Foundation Year and is described as " sorting and describing squares, circles, triangles, rectangles, spheres and cubes" along with this students will need to be able use spatial reasoning to visual 2D and 3D shapes as stated in the elaboration. This falls under the Scootle resource as ACMMG009.
Sourced Teaching Strategy:
( Jamieson-Proctor, R. 2019 Powerpoint presentation )
Textbook Concepts, Skills and Strategy:
In Primary mathematics it is important to understand the attributes and relationships of different geometrical objects. Throughout their early childhood and through to their primary years, students continue to describe and sort different objects. In doing so it will help them develop their thinking stage at Level 1 of Hiele's theory and move onto Level 2 of his theory. Children need to be able to recognise geometric shapes as objects used in the real world, they should also be able to list the names of common shapes including: triangle, square, rectangle, circle. As well as this they should also be familiar with other words that are associated with the shape such as a centre, radius, diarmeter or circumference. Models play a key role in geometry, face models can easily be made with construction paper and edge models can be made with pipe cleaners or toothpicks that is connected with clay or tape ( Reys, R. 2012).
References:
Australia, E. (2018). Search - Scootle. Retrieved from http://www.scootle.edu.au/ec/search?accContentId=ACMMG009
Jamieson-Proctor, R. (2019). Learning Environment Online: Log in to the site. Retrieved from https://leo.acu.edu.au/mod/book/view.php?id=2406597&chapterid=190039
Mathematics. (2019). Retrieved from https://www.australiancurriculum.edu.au/f-10-curriculum/mathematics/?year=11751&year=11752&strand=Number+and+Algebra&strand=Measurement+and+Geometry&strand=Statistics+and+Probability&capability=ignore&capability=Literacy&capability=Numeracy&capability=Information+and+Communication+Technology+%28ICT%29+Capability&capability=Critical+and+Creative+Thinking&capability=Personal+and+Social+Capability&capability=Ethical+Understanding&capability=Intercultural+Understanding&priority=ignore&priority=Aboriginal+and+Torres+Strait+Islander+Histories+and+Cultures&priority=Asia+and+Australia’s+Engagement+with+Asia&priority=Sustainability&elaborations=true&elaborations=false&scotterms=false&isFirstPageLoad=false
Reys, R. (2017). Helping children learn mathematics (2nd ed., pp. 517,518,521,537,538). Milton, QLD: John Wiley & Sons.