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Wishball challenge: hundreds

TLF ID L8457

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 number. Be careful not to undershoot your target! Use the ‘Wishball’ to select your final digit. Try to reach the target in as few turns as possible. This learning object is one in a series of 15 objects.

Educational details

Educational value
• Develops students’ understanding of place value.
• Stimulates students’ mental calculation strategies.
• Uses three different methods of representing numbers to assist students’ visualisation of place value.
• Scaffolds students’ attempts with immediate feedback.
• Encourages repeated use through randomisation of activity elements.
• Includes an option to print a record of the place-value decisions made for every turn in each game.
• Includes voiceover support for key instructions.
Year level

2; 3

Learning area
• Mathematics

Other details

Contributors
• Contributor
• Name: Acumentum Pty Ltd
• Organization: Acumentum Pty Ltd
• Description: Technical implementer
• URL: http://www.acumentum.com.au
• Name: Education Services Australia Ltd
• Organization: Education Services Australia Ltd
• Description: Technical implementer
• URL: http://www.esa.edu.au
• Name: Education Services Australia
• Organization: Education Services Australia
• Description: Data manager
• Person: Michael Wagner
• Description: Script writer
• Person: John Flatt
• Description: Subject matter expert
• Person: Howard Reeves
• Description: Subject matter expert
• Publisher
• Name: Education Services Australia Ltd
• Organization: Education Services Australia Ltd
• Description: Publisher
• URL: http://www.esa.edu.au/