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Listed under:  Accuracy and precision

### Whole numbers level 5: four-digit numbers

This set of online activities focuses on the development and consolidation of number concepts to four digits and beyond. This is the fifth of seven levels in a series focusing on whole numbers to six digits. This level develops ideas about place value, rounding and number notation. Each level includes interactive drills ...

### Space debris: the accuracy of space lasers

In space there are thousands of human-made objects (satellites and space junk) orbiting Earth. To avoid collision with space debris, satellites are manoeuvred out of its path. Discover how space debris is tracked using lasers, and about accuracy's effects on the lifetime of the satellite. Find out, using trigonometry, the ...

### Engaging a Maths Class

The teacher draws upon her postgraduate research into student engagement in mathematics to develop innovative ways to support students in their learning. She encourages teamwork and the use of various resources to aid their thinking and learning. By helping students think about mathematics in ways that move beyond a simple ...

### Wombat stew. Integrated program

Inspired by the picture book Wombat Stew, lessons involve children in going on a Wombat walk to collect rubbish, investigating animal habitats, creating an Australian animals alphabet frieze, creating animal number stories, exploring vocabulary, making Wombat soup, discussing safe and unsafe situations, developing a news ...

### Wombat stew: counting and ordering animals. Mathematics

Based on the picture books Wombat Stew and One Woolly Wombat, lessons involve children in counting and ordering animals and solving and creating addition and subtraction number stories about the characters in Wombat Stew.

### Counting beetles: level 1

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. Choose a number for your answer and check it. This learning object is one in a series of five objects. Three objects in the series are also packaged ...

### Counting beetles: level 2

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. Choose a number for your answer and check it. This learning object is one in a series of five objects. Three objects in the series are also packaged ...

### My day: Li: level 3

Help Li by selecting the best texts for different parts of his day. Choose the correct text in a range of activities such as helping Li make up his mind about which food is healthy for breakfast, and what to pack in his school bag. This learning object is one in a series of six objects.

### My day: Jeneka: level 3

Help Jeneka by selecting the best texts for different parts of her day. Choose the correct text in a range of activities such as helping Jeneka get to school, and completing a project about Vincent Lingiari. This learning object is one in a series of six objects.

### Wishball: hundreds

Test your understanding of place value with three-digit numbers. Start with a three-digit whole number such as 507. A spinner provides a randomly generated digit. Choose its place value and add it to (or subtract it from) your starting number. Work towards a given target number, say 539, using other digits. You can choose ...

### Wishball challenge: hundreds

Challenge your understanding of place value in whole numbers up to 999. Receive a starting number, such as 328, and work towards turning it into a target number, such as 177, within 20 turns. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting ...

### Wishball: tens

Test your understanding of place value in two-digit numbers. Start with a two-digit whole number such as 57. A spinner provides a randomly generated digit. Choose its place value and add it to (or subtract it from) your starting number. Work towards a given target number, for example 12, using other digits. You can choose ...

### 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. ...

### Wishball: tournament

Challenge your understanding of place value in whole numbers and decimal fractions, from 0.001 to 9999. Either add or subtract numbers to reach a target number. For example, receive a starting number of 39.61. Spin the number 5 and decide whether to add or subtract 0.05, 0.5, 5 or 50 to reach your target number of 70.12 ...

### Party time: assessment

Assess your ability to fulfil a shopping list for a class party, with a view to budgeting. Buy enough lemonade, cupcakes and party hats for 32 people at the cheapest price, given minimum requirements. Calculate the cheapest unit price for the three items and the quantity of each required, considering the special discounts ...

### Wishball: ultimate

Test your understanding of decimal place value with whole numbers or numbers that include tenths, hundredths or thousandths. Receive a starting number, such as 3569, 356.9, 35.69 or 3.569, and work towards turning it into a target number, such as 7832, 783.2, 78.32 or 7.832. Spin a random digit, choose its decimal place ...

### 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 ...

### Wishball challenge: tenths

Test your understanding of decimal place value with numbers that include tenths. Receive a starting number, such as 128.9, and work towards turning it into a target number, such as 845.6. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting number. ...

### Wishball challenge: hundredths

Test your understanding of decimal place value with numbers that include hundredths. Receive a starting number, such as 46.87, and work towards turning it into a target number, such as 85.32. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting ...

### Wishball challenge: thousandths

Test your understanding of decimal place value with numbers that include thousandths. Receive a starting number, such as 3.569, and work towards turning it into a target number, such as 7.832. Spin a random digit, choose its decimal place value and use the given operation (either addition or subtraction) on your starting ...