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.

# 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

Key learning objectives
• Students identify the place value of each digit in three-digit numbers.
• Students add and subtract ones, tens and hundreds in three-digit numbers.
• Students read and interpret different representations of numbers.
• 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 the place-value decisions made for every turn in each game.
• Includes voiceover support for key instructions.
Year level

3

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
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 Australia
• Subject matter expert
• Name: John Flatt
• Subject matter expert
• Name: Howard Reeves
• Technical implementer
• Publisher
• Date of contribution: 20 Sep 2013
• Organisation: Education Services Australia
• URL: http://www.esa.edu.au/
Access profile
• Colour independence
• Device independence
• Hearing independence
Learning resource type
• Tablet friendly (Interactive resource)
Browsers
• any - minimum version: Microsoft Edge (Windows); Default Android Browser
• Google Chrome - minimum version: 35+ (Windows, macOS, Android)
• Firefox - minimum version: 45+ (Windows & Mac)
• ms-internet explorer - minimum version: 10+ (Windows)
• Safari - minimum version: 7+ (Mac); Safari for iOS 9+ (iOS)
Operating systems
• ms-windows - minimum version: Vista+
• macos - minimum version: 10.9+
• ios - minimum version: 9+
• android - minimum version: 5+
Platform requirements
• Due to the use of rich media content, this learning object is suitable for a connection speed of 256kb/s or faster.
Rights
• © Education Services Australia Ltd, 2016, except where indicated under Acknowledgements. Unless otherwise indicated, this material may be used in accordance with the Creative Commons Attribution 4.0 International (CC BY 4.0) licence creativecommons.org/licenses/by/4.0/.