Learning objects 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


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

    Other details

    • 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
    • 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
    • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgements.