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# polyhedral

## Keeping in Shape

This is a level 3 geometry activity from the Figure It Out theme series.

## Cut it Out

This is a level 3 measurement strand activity from the Figure It Out series.

## Cuboid Construction

This is a level 3 measurement strand activity from the Figure It Out series.

## Tricky Truncations

This is a level 5 geometry strand activity from the Figure It Out series.

## Caught in the Nets

This is a level 3 geometry strand activity from the Figure it Out series.

## Houses

This unit seeks to connect learning outcomes across all five content strands, number, geometry, statistics, algebra, and measurement.  The context of houses is used to develop concepts such as drawing and modelling 3-dimensional objects, using co-ordinate systems to locate position, finding all the possibilities of events, and identifying paths through simple networks.  The unit provides an excellent vehicle for students to use a broad range of problem solving strategies.

## A Prime Search

In this unit we use rectangular models or arrays to explore numbers from one to fifty.  We practice expressing numbers as the product of two smaller numbers and in doing so identify the factors of a number.  We are also introduced to prime numbers.

Visit ESOL Online for a version of this unit designed to support students for whom English is an additional language.

## Odd Thing Out

List a number of properties that distinguish the 3-dimensional solids of the problem.

Devise and use Problem Solving Strategies to explore situations mathematically in particular guess and check, draw a picture, use equipment.

## Odd One Out

list a number of properties that distinguish squares from circles from cubes from pentagons.

devise and use problem solving strategies to explore situations mathematically (guess and check, make a drawing, use equipment).

## Building with triangles

In this unit, students will construct three-dimensional objects with triangles with emphasis on

• identifying properties of triangles
• constructing triangles (both equilateral and irregular), using either ruler and protractor or ruler and compass
• identifying three-dimensional objects which can be constructed using triangles
• designing the net and making three-dimensional objects
• naming three-dimensional objects