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Video

Numbers Count: What are factors?

What are factors? Watch as the jelly babies in this clip show you! What are the factors of 12? How many factors does the number 11 have? Try explaining to a friend what a prime number is.

Video

Count Us In, Ep 9: Using data about favourite foods

Flynn helps Dodly gather information about monsters' favourite foods for Dodly's new cafe menu. Watch and learn while the two monsters research their friends' favourite foods and then display and organise this information. Will Flynn ever get fed at Cafe de Dodly?

Video

What is a quarter?

What is a quarter? You get quarters when you divide a whole into four equal parts. Each one of these four parts is a quarter. Watch this great explainer produced by Monique in collaboration with ABC Splash and see how she explains quarters.

Video

Count Us In, Ep 15: Which Container Holds More Magic Rocks?

Flynn and Dodly are going on a camping adventure. Watch how they measure the capacity of different containers. Which container will hold the most? 'Dodly the Adventurer' needs a container to put all his precious rocks in. Can you find a container big enough?

Video

Count Us In, Ep 14: How big is the magic bus?

How do we measure how big something is? Flynn and Dodley want to see who has the bigger toy bus. Which bus is taller, wider, longer? Flynn models how to measure his bus using sticks so he can make a garage for his 'magic' bus. The Flying girl and others also do some measuring.

Video

MathXplosion, Ep 20: Crack an ancient Roman code

Decrypt the ancient cipher box used by Julius Caesar over 2,000 years ago! By shifting the alphabet or replacing one letter for another further down the alphabetical sequence, you can crack a coded message. The secret to a cipher is one special piece of shared information, known as a key. This shared key is required for ...

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 ...

Video

Farm diaries: teacher video

This video supports the unit of work by the same name. Presented by a classroom teacher who has trialled the unit the video reflects on the inquiry based pedagogy and the unit's value in terms of curriculum alignment and student engagement.

Online

Time match (Quarter hour)

This is a printable board game for students to practise matching analogue clock times to digital or words. Times are presented in quarter hours for example 5:15 or quarter past five. The game includes instructions.

Interactive

Australian coin history

This interactive slideshow from the Royal Australian Mint provides a series of high resolution images and brief descriptions of currencies from Indigenous barter systems to modern Australian currency. A downloadable fact sheet on Australian coin history is accessible from selected pages within the slideshow.

Online

reSolve: Algebra - Equivalence

This sequence of two lessons builds students' understanding of equivalence as balance. The equals sign is used to indicate the same value on both sides of an equation. Students develop their understanding of equivalence by looking at balancing scales with blocks of different weights. Each lesson is outlined in detail including ...

Online

reSolve: Multiplication: Making Robots

This sequence of lessons introduces the key idea of multiplication as a Cartesian product, using the language of 'for each'. Students explore the total number of different robots that can be made using three heads, three bodies and three feet. The students represent the different combinations for the robots as array. The ...

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

reSolve: What a Load of Rubbish

In this series of three lessons, students conduct an audit of the rubbish they find in their playground. They use a range of categories to sort, display and interpret the data and make simple inferences. They then reclassify the rubbish collected as to whether it can be recycled, composted or if it needs to go into the ...

Video

BTN: Leap second

We all know there are 60 seconds in a minute... or are there? Every few years an extra second is added to a day, and this is called a 'leap second'. Find out why we have leap seconds and why they mightn't be around for much longer.

Video

MathXplosion, Ep 6: Zero the hero

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.

Interactive

Fraction basics - Easy & Effective Fractions Tutor - iTunes app

Learn about the core concepts of fractions through 12 animated clips. View the clips on the topic that you want to learn about. These clips will help build a string foundation in fractions. Free when reviewed on 12/5/2015.

Online

reSolve: Counting Large Collections

This lesson engages students in investigating how to count a large number of objects. Students are encouraged to think of efficient counting strategies and effective ways to keep track of their count. They explore unitising, leading to an opportunity to explore the patterns formed and build an understanding of place value. ...

Online

reSolve: Authentic Problems: Bunches of Balloons

This sequence of three lessons introduces division and multiplication through the context of decorating a room with clusters of balloons. Students carry out an inquiry using a variety of processes associated with multiplication and division such as grouping concrete objects, arrays, repeated addition and skip counting. ...

Interactive

Rotations of two-dimensional objects

This is a four-page HTML resource about solving problems concerning quarter turns of two-dimensional objects. It contains four questions, one of which is interactive, and one video. The resource discusses and explains quarter turns to reinforce students' understanding.