# Wishball: tournament

TLF ID L8460

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 within 20 turns. Use the ‘Wishball’ to select your final digit. Try to reach the target in as few turns as possible. Play a random game, replay a previous game or play a game with the same target number as someone else. This learning object is one in a series of 15 objects.

#### Educational details

Key learning objectives
• Students identify the place value of each digit in four-digit numbers from 0.001 to 9999.
• Students add and subtract in thousandths, hundredths, tenths, ones, tens, hundreds and thousands.
• Students read and interpret different representations of numbers from 0.001 to 9999.
• Students apply mental computation skills.
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 turns taken for each game.
• Includes options to play a random game, repeat a game, or to play the same game as others.
Year level

6

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
Student activity
• Interactives;
• Games;
• Experiment;
• Analysis;
• Modelling

#### Other details

Contributors
• Technical implementer
• Script writer
• Name: Michael Wagner
• Organisation: Godwin + Wagner
• Address: Box Hill South VIC 3128 Australia
• Subject matter expert
• Name: John Flatt
• Address: Geelong VIC 3220 Australia
• Subject matter expert
• Name: Howard Reeves
• Address: Lindisfarne TAS 7015 Australia
• Technical implementer
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
• Publisher
• Date of contribution: 20 Sep 2013
• Organisation: Education Services Australia
• Address: Melbourne VIC 3000 Australia
• URL: http://www.esa.edu.au/
Access profile
• Colour independence
• Device independence
• Hearing independence
Learning resource type
• Interactive Resource
Browsers
• Microsoft Internet Explorer - minimum version: 8.0 (MS-Windows) - maximum version: 9.0 (MS-Windows)
• Firefox - minimum version: (MS-Windows)
• Safari - minimum version: 5.1 (MacOS)
Operating systems
• MacOS - minimum version: 10.6
• MS-Windows - minimum version: XP - maximum version: 7
Rights
• © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.