# Pobble arrays: find two factors

TLF ID L2058

Help creatures to line up and walk through gates in equal rows and columns. Look at the given number of pobbles, and enter the number of gates and rows. For example, predict how many equal rows of pobbles are needed to fit 12 of them through four gates. This learning object is one in a series of three objects.

Tags: arrays

#### Educational details

Key learning objectives
• Students apply knowledge of factors of numbers to solve problems.
• Students apply the commutative property of multiplication.
• Students find sets of factors for a number.
Educational value
• Helps students to develop and consolidate knowledge of basic number facts that underlie effective multiplicative thinking.
• Introduces the commutative property of multiplication.
• Relates the formation of equal groups to an array structure of equal rows and equal columns.
• Automated array construction provides a visual model to support understanding of the multiplicative relationship between factors.
Year level

3; 4

Learning area
• mathematics
Strand
• Mathematics/Number and algebra
Concept
• Mathematics/Multiples
• Mathematics/Multiplication
• Mathematics/Factors
• Mathematics/Guess-Check-Improve
• Mathematics/Arithmetic
• Mathematics/Division
Skill
• Knowledge;
• Comprehension;
• Application
Student activity
• Interactives;
• Experiment;
• Analysis;
• Modelling
Learning design
• Experiential learning;
• Independent learning;
• Problem solving;
• Visual learning

#### Other details

Contributors
• Script writer
• Name: Erica Dale
• Organisation: Tungaroo Software
• Address: Manly NSW 3095 Australia
• Subject matter expert
• Name: Jenni Way
• Address: Springwood NSW 2777 Australia
• Technical implementer
• Educational validator
• 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.