Close message Scootle has stopped supporting resources that use the Adobe Flash plug-in from 18 Dec 2020. Learning paths that include these resources will have alerts to notify teachers and students that one or more of the resources will be unavailable. Click here for more info.

# Wishball: hundreds

TLF ID L8456

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 the final digit (the ‘Wishball’) to reach your target. Don’t overshoot (in addition) or undershoot (in subtraction) the target number! Try to achieve it within 20 turns, and in as few turns as possible.

#### 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
• Address: VIC, AUSTRALIA
• URL: http://www.acumentum.com.au
• Name: Education Services Australia Ltd
• Organization: Education Services Australia Ltd
• Description: Technical implementer
• Address: VIC, AUSTRALIA
• 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
• Copyright Holder
• Name: Education Services Australia
• Organization: Education Services Australia
• Address: AUSTRALIA
• URL: www.esa.edu.au
• Publisher
• Name: Education Services Australia
• Organization: Education Services Australia
• Description: Publisher
• Address: VIC, AUSTRALIA
• URL: www.esa.edu.au
• Resource metadata contributed by
• Name: Education Services Australia Ltd
• Organisation: Education Services Australia Ltd
• Address: AUSTRALIA
• URL: www.esa.edu.au
Access profile
• Colour independence
• Device independence
• Hearing independence
Learning Resource Type
• Interactive
Rights
• © Education Services Australia Ltd, 2016, except where indicated under Acknowledgements. This material may be used in accordance with the Creative Commons Attribution-ShareAlike 3.0 Australia (CC BY-SA 3.0 AU) licence https://creativecommons.org/licenses/by-sa/3.0/au/.