2026 7 Maths Unit 2.1 Rubric

Actual Rubrics are based on teacher-elaborations of selected content descriptors for the assessment that sufficiently map to all of the Achievement Standard components.

Achievement Standard Rationaliser for Assessment Construction (Non-Assessment Specific)

Achievement Standard Component	E	D	C	B	A
Students use formulas for the areas of triangles and parallelograms and the volumes of rectangular and triangular prisms to solve problems.	Unable to use formulas for area or volume.	Applies area/volume formulas with significant scaffolding or makes frequent calculation errors.	Students use formulas for the areas of triangles and parallelograms and the volumes of rectangular and triangular prisms to solve problems.	Independently selects and accurately applies the correct area and volume formulas to complex problems.	Solves multi-step problems involving composite 2D shapes and 3D prisms, reversing formulas to find unknown dimensions.
They describe the relationships between the radius, diameter and circumference of a circle.	Cannot identify the radius, diameter, or circumference.	Can identify circle features but struggles to articulate the relationships between them.	They describe the relationships between the radius, diameter and circumference of a circle.	Clearly articulates how radius, diameter, and circumference interact, using accurate mathematical language.	Uses the relationships between circle features to prove concepts or solve complex spatial problems.

Content Descriptor Rubric for Content Rationalisation (Non-task specific)

E	D	C 😊	B	A
Confuses the concept of perimeter with area.	Plugs numbers into formulas but frequently uses the slant edge instead of the perpendicular height.	AC9M7M01 solve problems involving the area of triangles and parallelograms using established formulas and appropriate units	Deconstructs irregular composite polygons into exact triangles and parallelograms to find the total area.	Derives the area formula for a parallelogram by geometrically transforming a rectangle.
Counts visible faces instead of calculating 3D space.	Multiplies dimensions randomly without properly identifying the true base area of the prism.	AC9M7M02 solve problems involving the volume of right prisms including rectangular and triangular prisms, using established formulas and appropriate units	Calculates the missing dimension of a prism when the total volume and other sides are provided.	Optimizes packaging design by maximizing internal volume while minimizing the external surface area.
Cannot visually distinguish between a radius and a diameter.	Measures circles physically but fails to grasp the constant mathematical ratio of Pi.	AC9M7M03 describe the relationship between π and the features of circles including the circumference, radius and diameter	Manipulates the circumference formula to accurately calculate the radius of objects from their perimeter.	Proves the relationship between a circle’s circumference and the perimeter of inscribed polygons.
Identifies shapes purely by visual appearance rather than geometry.	Names basic polygons but cannot articulate the defining conditions of a rhombus versus a square.	AC9M7SP02 classify triangles, quadrilaterals and other polygons according to their side and angle properties; identify and reason about relationships	Constructs geometric hierarchies (e.g., proving all squares are rectangles, but not vice versa).	Deduces the exact identity of hidden polygons based strictly on a minimal set of abstract angle and side clues.