Noah’s Mystery Parcel


The purpose of this activity is to engage students in solving a measurement problem involving volume and weight.

Achievement Objectives
GM3-1: Use linear scales and whole numbers of metric units for length, area, volume and capacity, weight (mass), angle, temperature, and time.
GM3-2: Find areas of rectangles and volumes of cuboids by applying multiplication.
Description of Mathematics

The background knowledge and skills that need to be established before and/or during this activity are outlined in the diagram below:

This activity may be carried out with guidance, or by allowing the student to follow their own method of solution. The approach should be chosen in sympathy with students’ skills and depth of understanding.


This mystery parcel has arrived for Noah’s family. 

The packaging label is damaged.
Noah wonders what could be inside. 
When he measures the parcel he finds it is 24cm long and the
square ends measure 12cm x 12cm.


Say what you think could be in the parcel and why you think that.


The visual approach (show more)

  • The student is able to use images and/or objects to represent a problem, and calculate to find a solution.

The conceptual approach  (show more)

  • The student is able to apply their knowledge and skills in an unfamiliar setting and is able to generalise.
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Level Three