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Listed under:  Mathematics  >  Number (Mathematics)  >  Real numbers  >  Integers  >  Positive integers
Video

Odd and even numbers

Do you know what makes an odd number and what makes an even number? There are a few ways to test whether a number is odd or even. Find out about one method in this video, then see if you can discover at least one other method.

Video

Double that number

Explore an age-old multiplication method that repeatedly doubles numbers to get a product. Learn how this ancient method of multiplication is similar to that used by modern computers.

Video

Maths Years 3 - 4 with Ms Kirszman: Quantifying collections

In this lesson, Ms Kirszman teaches you how to play Minute To Win It, and she explores how we can quantify collections without needing to count but by looking and thinking instead. The use of familiar structures to help you quantify collections is also explored, for example, dice patterns and ten-frames.

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Numbers 20-100

This is a collection of digital activities and printable worksheets that uses the Italian ordinal numbers 20 to 100 in a variety of contexts, such as expressing weights and distances (in kilograms and kilometres), ages, phone numbers and street addresses, and playing cultural games such as tombola. It provides drills for ...

Online

reSolve: Place Value: Number Sorting

This sequence of two lessons explores sorting numbers and place value. In the first lesson students identify the value of digits in a number and also build correct terminology to sort and describe 1-digit, 2-digit and 3-digit numbers. In the second lesson, students are challenged to use Venn diagrams to sort and describe ...

Online

reSolve: Authentic Problems: Target Ball

This sequence of four lessons explores the relationship between an informal unit of measure and what is being measured using the context of designing a game of 'Target Ball'. Students work in groups to collect data on how far their chose ball rolls, using a cut-out foot as an informal unit of measure. They represent and ...

Online

reSolve: Counting: Handfuls

This lesson focuses on building students' counting skills, particularly their ability to subitise a collection (recognise the number of items in a group without the need to count them) . Students consider ways of structuring a collection so that the total can be quickly identified. They explore different arrangements for ...

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: Authentic Problems: What's For Lunch?

This sequence of four lessons invites students to investigate how many of a chosen food item are eaten at their school in a year. Students identify the mathematical knowledge they need to find how many of the selected items they eat in a year and devise a plan to find the total number, using grouping, partitioning and repeated ...

Online

reSolve: Authentic Problems: Tea Party

This sequence of four lessons presents a purposeful context for counting using the context of planning a tea party. Students consider items required for a small party, draw and count the items and then extend this to a larger party for the whole class. Each lesson is outlined in detail including curriculum links, vocabulary, ...

Online

reSolve: Number: One is a Snail

This sequence of lessons explores counting on strategies and early addition skills. Students represent numbers using animals with different numbers of legs and explore how one number can be represented in multiple ways. They also explore the concept of efficiency when comparing various representations. Students are then ...

Online

reSolve: Skip Counting: How Many Birds?

This lesson explores counting large groups and building skip counting strategies. Students use their own strategies to work out how many birds are in a picture. They are then encouraged to consider efficient counting strategies and to recount the collection by grouping birds and using skip counting strategies. The lesson ...

Online

reSolve: Place Value Cards

This sequence of two lessons explores the multiplicative place value properties of numbers. Students learn to represent numbers up to 1000 as multiples of 100s, 10s and 1s. Students skip count according to random arrangements of place value cards and explore whether the order of the cards affects the totals. They then use ...

Online

Counting and representing numbers 1–20

Explore counting familiar objects and representing numbers up to 20. Name, match, subitise, compare and order numbers to 20, then use these numbers in addition and subtraction. Relate number sentences to these operations in meaningful ways.

Online

MoneySmart: Kieren's coin

This is a year 2 mathematics unit of work about money. The unit is intended to take about 10 hours of teaching and learning time. It consists of 11 student activities supported by teacher notes on curriculum, pedagogy and assessment. Student activities include responding to a story about a rare foreign coin, interacting ...

Online

MoneySmart: Bertie's socks

This is a year 1 mathematics unit of work about shopping. The unit is intended to take about 10.5 hours of teaching and learning time. It consists of 11 student activities supported by teacher notes on curriculum, pedagogy and assessment. Student activities include responding to a story about shopping, working with Australian ...

Online

Collections - comparing and ordering

This is a web resource that includes student activities and games focusing on collections to 20, accompanied by a teacher guide. Activities cover comparing collections using one-to-one correspondence, ordinal numbers with associated positional words and a game based on the traditional Japanese game of ohajiki. The resource ...

Online

Numbers and counting - Foundation

This is a teacher resource that includes a set of student activities focusing on the numbers to 20, accompanied by copy masters and a detailed teacher guide for each activity. The activities cover the sequence of numbers, number names, 1:1 correspondence and recording and representing numbers, and make a connection to Asian ...

Interactive

The array: go figure

This tutorial is suitable for use with a screen reader. It explains strategies for solving simple multiplications in your head such as 6x4. Work through sample questions and instructions explaining how to break up numbers into their factors. Solve multiplications by using arrays to break them up into rows and columns, then ...

Interactive

Wishball challenge: whole numbers

Test your understanding of decimal place value with whole numbers. Receive a starting number, such as 3786, and work towards turning it into a target number, 7664. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. Be careful not to overshoot ...