Dissolving salt faster 0 Overview Using this Resource Connecting to the Curriculum Marking Student Responses Working with Students Further Resources This task is about increasing the rate of salt dissolving in water. Question 1Change answer You have been given a tablespoon of salt to be dissolved in a glass of cold water. What are two things you could do to make the salt dissolve faster? You have been given a tablespoon of salt to be dissolved in a glass of cold water. What are two things you could do to make the salt dissolve faster? 1. 2. Task administration: This task can be completed with pencil and paper or online. Copyright: © Anna Koeva | Dreamstime.com Level: 3 Curriculum info: Science, Investigating in science, Material World Keywords: changes, dissolving, salt Description of task: Students explain two ways to make salt dissolve faster when in cold water. Curriculum Links: Science capabilities The capabilities focus is brought about by the conversations you have and the questions you ask. Capability: Gather and interpret data This resource provides opportunities to discuss different methodologies that can be used in investigations. Science capability: Gather and interpret data (TKI) Science capabilities: Gather and interpret data Making Better Sense: Dissolving Answers/responses: Y6 (09/1998) Any 2 of: Stir the salt in the water/shake. Use warmer/warm/hot water. Crush the salt. 2 correct – difficult 1 correct – very easy Diagnostic and formative information: Analysis of responses 73% of students mentioned stirring or shaking. 46% – use warmer water. 1% – crushing. Melting or dissolving? Dissolving milo Rates of dissolving Dissolving sugar Melting and dissolving Sugary drinks
