Directory for Directory for
Category A 2008
Investigations 1
Category B: Investigations 2 contains another 20 Investigations including 8 for upper school.
Information about other Categories for 2008 is available at this link:2008 Subscriptions Information
| OTRNet have published a
hardcopy of the investigations in Category A of this
service. This "blackline masters" book is now available for purchase.
The standard price of this book is $45 but
for subscribers to Category A a reduced price of $10 applies
to enable users to get a hardcopy of the
investigations they are using. A hardcopy version of the investigations in Category B of this service is also being published soon. This "blackline masters" book will be available for purchase in 2008. The standard price of this book will be $45 but for subscribers to Category B a reduced price of $10 will apply to enable users to get a hardcopy of the investigations they are using. |
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The investigations below can be downloaded from the links in the first column. If you are unsure how to download go to Information On Downloading Files first.
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permitted.
| Link | Investigation Name | Approximate Age Group | Content Strand(** see note) | Description |
| Trains | 13 | Number | Partitions of numbers | |
| Areas and Lengths | 13 | Measurement | Area/perimeter relationships and optimisation | |
| Altered Shapes | 13 | Space | Projection method of enlargement | |
| Finding Coincidence | 13 | Number | Lowest common multiple | |
| Means | 13 | Chance and Data | Effect of change of scale and origin on mean | |
| Caterpillar Crawls | 13 | Chance and Data | Counting techniques | |
| Dots and Lines | 13 | Chance and Data | Counting techniques | |
| How Many Polygons | 14 | Chance and Data | Counting techniques | |
| Spider Walks | 14 | Measurement | Minimum distance using Pythagorean theorem | |
| Unit Fractions | 14 | Number | Unit fractions and algebraic generalisations | |
| Efficiency Ratios | 14 | Measurement | Volume/Surface Area and optimisation. This file is a free sample - just click on the link to access the file. | |
| Exponential Models | 14 | Algebra | Exponential functions applied | |
| Bearings | 15 | Space | Bearings and scale drawings | |
| DNA | 15 | Chance and Data | Counting Techniques | |
| Investigating Circles | 15 | Algebra | Equations of circles | |
| Arc Length | 15 | Measurement | Arc length and radian measure | |
| Matrices | 15 | Number | Matrix operations | |
| cata18 | Ice Creams | 15 | Measurement | Volumes of spheres and cones and optimisation |
| cata19 | Proportion Functions | 15 | Algebra | A functional approach to proportion |
| cata20 | Population Control | 15 | Chance and Data | Probability and expectation |
**Note: The dominant mathematical strand in all investigations is Working Mathematically.
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