Mathematics / Year 1 / Number and Algebra / Number and place value

Curriculum content descriptions

Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts (ACMNA015)

Elaborations
  • developing a range of mental strategies for addition and subtraction problems
General capabilities
  • Numeracy Numeracy
  • Critical and creative thinking Critical and creative thinking
ScOT terms

Subtraction,  Addition,  Associativity

Video

Numbers Count: Adding two numbers

How many different ways can you think of to add two numbers to reach ten? Watch this video to learn them all!

Online

reSolve: Addition: Partitioning

This sequence of two lessons explores early algebraic thinking around the concept of equivalence. Students develop equivalence understanding by partitioning numbers into two parts. They explore the commutative property and compensation as they are challenged to find all possible combinations. Each lesson is outlined in ...

Interactive

Pirate treasure hunt: eight challenges

Join forces with Pirate Jack. He needs your help to solve eight problems and find the hidden treasure. Use the map to work your way through the obstacles one by one and in the right order. Apply your maths and literacy skills to make sure you collect the correct item before tackling the next obstacle. For example, you’ll ...

Interactive

Sites2See – number for primary

Selected links to a range of interactive online resources for the study of number in Foundation to Year 6 Mathematics.

Online

Addition and subtraction: Year 1 – planning tool

This planning resource for Year 1 is for the topic of Addition and subtraction. Students build upon the foundations of additive thinking. They draw upon part-part-whole understanding of numbers to 10 as they explore addition and subtraction within 20.

Downloadable

Put them together

Students rearrange the parts of an addition situation to show commutativity. They use appropriate thinking strategies to solve simple addition problems and record addition problems with numerals and symbols.

Text

Work sample Year 1 Mathematics: Donuts

This work sample demonstrates evidence of student learning in relation to aspects of the achievement standards for Year 1 Mathematics. The primary purpose for the work sample is to demonstrate the standard, so the focus is on what is evident in the sample not how it was created. The sample is an authentic representation ...

Text

Work sample Year 1 Mathematics: Equilateral triangles

This work sample demonstrates evidence of student learning in relation to aspects of the achievement standards for Year 1 Mathematics. The primary purpose for the work sample is to demonstrate the standard, so the focus is on what is evident in the sample not how it was created. The sample is an authentic representation ...

Online

Literacy and numeracy improvement: a whole-school approach

This teacher resource describes how 74 public schools in metropolitan, regional and rural Western Australia used three major components of the school improvement cycle to achieve significant improvement in the literacy and numeracy learning outcomes of their students. The resource is organised in nine sections: Summary, ...

Video

BTN: What is an abacus?

An abacus is a tool that helps people solve maths problems. Why might some people still use, and encourage the use of, an abacus when there are more contemporary tools like calculators?

Video

Mixed Up Maths, Ep 11: Funny money

What do you use money to buy? In this clip we look at Australian money. See the different coins and notes that make up our money system. We investigate if size, (in coins) does matter. Check out how many 5 cent pieces you need to make two dollars. We also look at some currencies used around the world. Find out which country ...

Online

reSolve: Authentic Problems: Grandma's Soup

This sequence of four lessons focuses on counting large collections of objects and developing efficient counting strategies. Students explore the ambiguous nature of a 'handful' and investigate how different sized hands and different grabbing techniques will result in different quantities of macaroni. Each lesson is outlined ...

Image

Chinese abacus, c1900

This is a rectangular wooden abacus (15.5 cm x 29 cm x 2.5 cm), made in about 1900. It has two decks (divided horizontally by the beam) of 13 rods inserted vertically in the frame. On the bottom deck there are five wooden beads on each rod and on the top deck there are two beads on each rod. The abacus has a removable wooden ...

Interactive

Wishball challenge: tens

Challenge your understanding of place value in whole numbers up to 99. Receive a starting number, such as 86, and work towards turning it into a target number, such as 18, within 20 turns. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. ...

Interactive

Counting beetles

Choose to do the activities in levels one, two or three. Watch the beetles crawl into the garden or out of the garden. Watch some beetles completely or partially hide beneath the leaves. Work out how many beetles there are altogether. Remember to count any beetles hiding under the rock. Choose a number for your answer and ...

Interactive

Pay the price

This activity gives students practice in identifying the value of coins and notes. It also reinforces the concept of exchanging money for goods. The different levels all use a shopping context and the same basic functionality. Each level takes approximately 15 minutes.

Online

Show me your money - years 1 and 2

This is a teacher resource consisting of a set of student activities designed to encourage learning about the appearance and value of money, accompanied by copy masters and a detailed teacher guide for each activity. The activities make use of Australian coins and notes, and also Japanese and Singaporean coins, and include ...

Interactive

Sites2See: Patterns and Algebra

Selected links to a range of interactive online resources for the study of patterns and algebra in Foundation to Year 6 Mathematics.

Online

TIMES Module 3: Number and Algebra: multiplication and division - teacher guide

This is a 23-page guide for teachers. This module contains a description of suitable models for multiplication, a discussion of the type of problem phrased in words that requires multiplication for its solution, and mental and written strategies for multiplication. The use of the commutative, associative and distributive ...

Online

Counting games - years 1 and 2

This is a teacher resource that includes a set of student activities including counting games, focusing on numbers to 100, accompanied by copy masters and a detailed teacher guide for each activity. The games include the Korean number counting game sam yew gew - referred to as 'sam-yuk-gu' in the Australian Curriculum. ...