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WS01 - Equilateral triangles

Mathematics, Year 1

By the end of Year 1, students connect number names, numerals and quantities, and order numbers to at least 120. They demonstrate how one- and two-digit numbers can be partitioned in different ways and that two-digit numbers can be partitioned into tens and ones. Students partition collections into equal groups and skip count in twos, fives or tens to quantify collections to at least 120. They solve problems involving addition and subtraction of numbers to 20 and use mathematical modelling to solve practical problems involving addition, subtraction, equal sharing and grouping, using calculation strategies. Students use numbers, symbols and objects to create skip counting and repeating patterns, identifying the repeating unit. 

 

They compare and order objects and events based on the attributes of length, mass, capacity and duration, communicating reasoning. Students measure the length of shapes and objects using uniform informal units. They make, compare and classify shapes and objects using obvious features. Students give and follow directions to move people and objects within a space. 

 

They collect and record categorical data, create one-to-one displays, and compare and discuss the data using frequencies. 

Number

AC9MFN02

partition one- and two-digit numbers in different ways using physical and virtual materials, including partitioning two-digit numbers into tens and ones

Number

AC9M1N04

add and subtract numbers within 20, using physical and virtual materials, part-part-whole knowledge to 10 and a variety of calculation strategies

Algebra

AC9M1A02

recognise, continue and create repeating patterns with numbers, symbols, shapes and objects, identifying the repeating unit

Space

AC9M1SP01

make, compare and classify familiar shapes; recognise familiar shapes and objects in the environment, identifying the similarities and differences between them

Annotations

 

1. Forms an equilateral triangle, recognising the shape.  

 

2. Applies pattern recognition skills to match the colours.  

 

3. Applies knowledge of the different ways of making 10 to complete the pattern and to form the larger equilateral triangle. 

 

4. Counts to 12 using one-to-one correspondence, demonstrating that they are able to continue counting on from 12 to get 13 and then from 13 to get 17.  

 

5. Forms a larger triangle, using pattern recognition skills and knowledge of different ways to partition ten. 

6. Recognises and describes different patterns formed with colours, shapes and objects, using obvious features.  

 

7. Makes a shape and classifies it as a hexagon based on its having 6 sides. 

8. Creates and describes patterns formed by shapes, recognising and classifying the shapes appropriately.