Mathematics / Year 2 / Number and Algebra / Number and place value

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Curriculum content descriptions

Group, partition and rearrange collections up to 1000 in hundreds, tens and ones to facilitate more efficient counting (ACMNA028)

Elaborations
  • using an abacus to model and represent numbers
  • understanding three-digit numbers as comprised of hundreds, tens and ones/units
  • demonstrating and using models such as linking blocks, sticks in bundles, place-value blocks and Aboriginal bead strings and explaining reasoning
General capabilities
  • Numeracy Numeracy
  • Critical and creative thinking Critical and creative thinking
ScOT terms

Place value,  Counting,  Associativity

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3 direct matches to ACMNA028 | 17 other related resources
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Image

Chinese abacus, c1900

  • TLF-IDR1783

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 ...

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Interactive

Wishball challenge: tens

  • TLF-IDL8459

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. ...

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Text

Partitioning: One is a snail, ten is a crab - Calculate

  • TLF-IDA004279

This activity provides students with an opportunity to partition numbers in different ways. Partitioning is an important concept as it allows numbers to be broken up so that they’re easier to use.

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Video

BTN: What is an abacus?

  • TLF-IDM021154

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?

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Interactive

Decimal currency videos

  • TLF-IDM024872

This collection of videos from the Royal Australian Mint provides a series of brief descriptions of the transition from pre-decimal to decimal currency in Australia and how coins are made in a mint

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Interactive

Greatest Of All Thieves (Estimating and subitising)

  • TLF-IDA003065

Gasp! The goat burglars robbed the piggy bank and stole all the pig's money! As a team, use subitising to estimate how big the heist is and recover the fortune from those greedy goats. Then, use number sentences to explain your thinking. Mathematical ideas and strategies this game supports: - Estimate the total of a collection ...

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Interactive

Hundreds, tens and units

  • TLF-IDM012235

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 ...

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Text

Addition and Subtraction - Calculate

  • TLF-IDA004282

This game focuses on addition, subtraction and estimation. It can be played many times as the totals will often be different and the focus of the mathematics can change. There is a video included to help with how to play the game.

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Text

TIMES Module 2: Number and Algebra: addition and subtraction - teacher guide

  • TLF-IDM008811

This is a 29-page guide for teachers. The module introduces addition and subtraction of whole numbers.

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Text

TIMES Module 1: Number and Algebra: counting and place value - teacher guide

  • TLF-IDM008812

This is a 16-page guide for teachers. It is a module introducing the concept of place value.

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Interactive

Goat Busters (Area model for multiplication) - ABC Education

  • TLF-IDA005649

As a team use the area model and mathematical thinking to find the answer to tricky calculations. Mathematical ideas and strategies this game supports: area model for multiplication; 1 x 2-digit multiplication; 2 x 2-digit multiplication; identifying factors; partial products; distributive property; place value partitioning ...

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Text

Our magnificent thing

  • TLF-IDA005815

This module focuses on repurposing rubbish, giving students the opportunity to consider sustainability and the impact of their lifestyle choices on the environment. Based on the fiction picture book, The Most Magnificent Thing by Ashley Spires, students are encouraged to repurpose recyclable items to create their own most ...

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Text

Today's Number - Calculate

  • TLF-IDA004281

This is an open task as it can cater for the needs of many students and can be used over and over to build confidence in representing numbers in different ways. In this activity students have an opportunity to engage with a variety of number ranges and are able to demonstrate their understandings of those numbers in many ways.

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Text

Number Walk Rich Task - Calculate

  • TLF-IDA004336

This downloadable lesson resource introduces the concept of ‘Number Walks’: taking a stroll with the class or group around the school or the local neighbourhood. Guided by the teacher, students note down anything they see that relates back to their understanding of the topic and then conduct a plenary session back in the ...

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Interactive

Piñata Party Tens (2-digit place value)

  • TLF-IDA003068

As a team, use your knowledge of tens and ones place values to help the goats release the treats from the piñata and have the GOAT party! Mathematical ideas and strategies this game supports: - Increasing and decreasing the value of 2-digit numbers. - Identifying the value of a digit based on its position in a numeral. - ...

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Text

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

  • TLF-IDM009165

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 ...

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Text

Domino Bingo - Calculate

  • TLF-IDA004366

In this game, students add single digit numbers and subitise domino dot patterns.

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Text

Odd & Even Year 1 & 2 - Calculate

  • TLF-IDA004301

In this lesson students investigate odd and even numbers.

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Video

MathXplosion, Ep 6: Zero the hero

  • TLF-IDM024939

What is the role of zero as a placeholder for large numbers such as 1 million, 1 billion and 1 trillion? Find out about the notion of place value and powers of ten through the act of bead counting.

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Interactive

The number partner: go figure

  • TLF-IDL105

This tutorial is suitable for use with a screen reader. It explains strategies for breaking up numbers into pairs of smaller numbers, eg 15 = 11 + 4. Work through examples of whole number pairs and sample questions. Apply these principles to solve additions or subtractions.

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