Close message Scootle will stop 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.

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:
    • Publisher
    • Date of contribution: 20 Sep 2013
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL:
    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.