Packing chocolate 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about working out volume. Chocolate bars are packed in a box as shown. Question 2Change answer a) How many bars are in a full box? Question 2Change answer b) The measurements of the box are shown on the diagram. b) The measurements of the box are shown on the diagram. i) What is the volume of the box? cm^{3} ii) What is the volume of one bar of chocolate? cm^{3} Task administration: This task can be completed with pencil and paper or online (with SOME auto marking). Level: 4 Curriculum info: Maths, Geometry and Measurement, Measurement Keywords: volume, cuboids, triangular prisms Description of task: Students work out how many triangular prism shapes there are in larger cuboid, and answer questions about volume of both shapes. Curriculum Links: This resource can help to identify students' understanding of volume and multiplicative strategies. Learning Progression FrameworksThis resource can provide evidence of learning associated with Measurement sense, sets 6-7Multiplicative thinking, sets 6-7 within the Mathematics Learning Progressions Frameworks.Read more about the Learning Progressions Frameworks. Answers/responses: Y8 (10/1997) a) 16 very easy b) i) ii) 160 10 [Accept if = b) i) ÷ a).] difficult difficult Diagnostic and formative information: Student response Likely calculation Likely reason b) 40 18 4 × 10 10 + 4 + 4 Confusing area and volume. Adds dimensions rather than multiplying. c) 2 2 × 1 Gives area of shaded base (but doesn't multiply by half, i.e., 2 × 1 × 1/2). c) 20 2 × 10 Calculates area of triangular base as 2 (2 × 1) rather than 1 (2 × 1 × 1/2). c) 40 Visualises one bar as quarter of whole box. Using cubes Volume and surface area II Volume and capacity Different capacities Holding millilitres Estimating the room How many blocks? Dripping Tap