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

Curriculum content descriptions

Count collections to 100 by partitioning numbers using place value (ACMNA014)

Elaborations
  • understanding partitioning of numbers and the importance of grouping in tens
  • understanding two-digit numbers as comprised of tens and ones/units
General capabilities
  • Numeracy Numeracy
ScOT terms

Place value,  Counting,  Associativity

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

Numbers Count: Importance of zero

How important is zero in place value? How would you write '50' if there was no zero?

Interactive

Hundreds, tens and units

This is an interactive resource that represents numbers visually as groups of hundreds, tens and units. It can be used to count numbers by partitioning them based on place value, or to represent numbers by building them from grids of hundreds, tens and units. The numerals matching the visual representations can be visible ...

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 ...

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

Number frames, by the Math Learning Centre - iTunes app

Addition and subtraction using an interactive bread frame. Encourages the use of different strategies to solve addition and subtraction problems. Drawing tools enables students to annotate work to show their understanding. Write equations with the text tool. Free when reviewed on 12/5/2015.

Text

Patterns have something that repeats over and over and over again: K–2 Year B – Unit 2

This two-week unit provides opportunity for students to further develop knowledge, understanding, and skills of two-dimensional shapes and their attributes and properties.

Text

There are many different situations where addition, subtraction, multiplication and division can be used: K–2 Year B – Unit 16

This two-week unit develops student knowledge and skills in understanding different situations where addition, subtraction, multiplication and division can be used. Students are provided opportunities to investigate the four operations through problem solving; explore the relationship between different operations and inverse ...

Video

The Mathscots: Buying Pet Toys

In this animated video, Abacus the cat and Prime the puppy count their collections of $1 coins and work out if they have enough to buy some new toys. The mathematical focus is on counting a collection of $1 coins using early place value concepts by stacking them into piles of 10, skip counting in tens and twos and including ...

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The Mathscots: Level 1 Teaching Guide

This teaching guide provides a range of associated activities for each of the Mathscots episodes at Year 1. The guide contains a summary of the mathematical focus in each episode, a range of scaffolded learning experiences for before, during and after viewing each video, activities for families at home, and sets of printable ...

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Recording data in a game of Kolap: Part 1

In this first of two lessons, students investigate and play a First Nations Australian children’s instructive game of throwing skill called Kolap. They collect and represent data, and discuss their findings.

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Visualising data for a game of Kolap: Part 2

In this second of two lessons, students create a visual representation of the data collected and recorded while playing a First Nations Australian children’s instructive game of throwing skill called Kolap.

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Patterns Year 2 - Calculate

The focus of this activity is on patterns and algorithmic thinking. The lesson aims to encourage students to explore problems with limited assistance from the teacher. Although the teacher asks questions and can prompt learning, the students will investigate the problem using their own strategies.

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Mind Mapping Numbers - Calculate

This activity provides a way for children to show and tell what they know about numbers. It can be modified for different age groups and used every day with a different number.

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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 ...

Online

Place Value: reSolve Garden

This sequence of 5 tasks explores the idea that 10 ones are equal to a unit of 1 ten. Students explore through the context of a garden as Mr Sprout the gardener packs and plants his seeds. Students have multiple experiences of stacking, of grouping, and of bundling as they make sense of this idea. Professional learning ...

Downloadable

The animals went in two by two

Students recall the twos number sequence and use skip counting by twos to count a collection.

Downloadable

The teen game

Students use standard place-value partitioning to represent 'teen' numbers.

Online

Skip-counting with Bee-bots

Play a skip counting game where students program the Bee-Bot to stop at multiples of a set number, eg 2, 4, 5, 10 on a number grid.

Online

Number sequence: Year 1 – planning tool

This planning resource for Year 1 is for the topic of Number sequence. Students work towards being able to recognise, represent and order numbers up to 120. They use partitioning and various counting processes to make sense of and represent numbers in different ways.