Spring stretch 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about showing relationship between mass and stretch. Here is a graph which shows how much a spring stretches when different masses are attached to it. Question 1Change answer a) How many millimetres would a 60 g mass stretch the spring? mm Question 1Change answer b) A piece of plasticine stretches the spring 8 mm. What is its mass? g Question 2Change answer c) 75 g mass stretched the spring 30 mm. If the spring was stretched to 70 mm, how many additional grams were added? g Question 3Change answer d) What is the relationship between the length of stretch and change in mass? d) What is the relationship between the length of stretch and change in mass? Task administration: This resource can be completed with pencil and paper or online (with some auto-marking). Level: 5 Curriculum info: Science, Investigating in science, Physical World Keywords: physical inquiry, forces, stretch, elasticity, mass, graph interpretation Description of task: Task: Answer questions about the relationship between mass and stretch. Assessment focus: graph interpretation. Curriculum Links: Science capabilities The capabilities focus is brought about by the conversations you have and the questions you ask. Capability: Interpret representations This resource provides opportunities to discuss reading and interpreting the patterns in a graph. Science capability: Interpret representations (TKI) Science capabilities: Interpret representations Answers/responses: Y10 (10/1997) a) 24 (mm) Allow ± 3 mm easy b) 20 (g) Allow ± 5 g easy c) 100 (g) Allow ± 5 g moderate d) Answer shows understanding that stretch is directly related to mass in a constant or linear manner. difficult Diagnostic and formative information: Common error c) More than 105g – 9% of students. 80-90g – 8% of students. 40g – 7% of students. No answer – 17% of students. Springs
