Engineering 'aha' Moments in Number
Calculating Changes supports the development of a firmly founded, creative number sense through Infant years, then develops into a rich resource of ideas, activities and approaches for all primary teachers. We work within the context of all children learning to work like a mathematician in best practice classrooms.

Have you seen Working Mathematically with Infants?

 

Free Tour
... In Brief

... Materials

... Activities

... Membership

... PD Programs

... Stories

... Background

... Evaluations

Members
... Activities

... Support

All the ingredients.
Poly Plug, calculators, kids and a reason for mathematical conversation.

Working Mathematically with Infants

We are very happy with our WMI kit. We are problem solving and polyplugging away and having a great time. ... Kerry Lee, Buninyong Primary School

Read more testimony in the Stories link.

  • Only available to Members
  • Threaded activities and investigations for Years K - 2
  • 10 weeks of number work detailed in 6 scope and sequence planners - one per semester
  • Each kit contains:
    • 20 Poly Plug
    • CD-ROM of activities extracted from Calculating Changes
    • Manual with weekly planners
  • Integrates with Maths With Attitude

Read WMI Manual Part A for further background.

$429 per kit (members only)
plus
$330 membership with kit

Members can also order
  • additional Poly Plug for $12·10 (normally $14·96)
  • additional manuals for $27·50 (normally $55)
  • and the CD may be copied to the school server for teacher access


Click this cover to print a brochure.

Ordering Details
  • Send your school purchase order to:
    Black Douglas Professional Education Services
    8 Greenbank Drive
    Mooroolbark 3138
    Australia
    T: +61 3 9726 8316
    F: +61 3 9727 4644
    E: doug@blackdouglas.com.au
  • Already a member and purchased at least 20 Poly Plug in the past?
    ...Order the manual ($55) & CD ($38·50) separately AND extra Poly Plug at the special rate.
  • Outside Australia?
    ...Please contact us for a quote.
Notes:
1. Calculating Changes membership is a once only fee.
2. Please include an email address on the order.
3. Prices do not include freight. 		Professional Development

WMI has been constructed to support in-house professional development. We are also available to provide programs stimulating the use of Calculating Changes through your school:

  • 2 hours
  • 1 day
  • 6 days
See PD Progams and contact Doug. Williams as shown.

Calculating Changes ... is a division of ... Mathematics Centre