Developing Starter: Alloy demonstration Exploring: Resources n/a Demonstrate Describe what happens during changes Demonstrate melting solder, allowing from 8Ge melting solder, Researching of the molten metal to drip into a tin lid. alloys Exploring allowing the State what happens at a material’s If possible, demonstrate how solder is Students could Science. molten metal to melting, freezing and boiling point. used to join copper pipes or compare the drip into a tin what is meant by: pure. wires together. properties of the lid. If possible, State the meaning of: alloy. alloy with the demonstrate Explain why metals are often alloyed Exploring: Researching alloys properties of the solder is used with other elements. Ask students to use and/or the component to join copper Securing Internet to find out about alloys. metals and add pipes or that a pure material has a fixed information about wires together. melting point and boiling point. Explaining: Harder alloys how the purity of Describe how impurities alter melting, Explain how the introduction of alloys is stated. freezing and boiling points. different atoms into a metal Identify a pure substance from its structure to make an alloy can make melting or boiling point. it harder and more rigid. Illustrate the Use models to explain why converting idea by using marbles in a tray. pure metals into alloys often increases the strength of the product. Plenary: Thinking about pure metals Exceeding and alloys Describe some ways in which purity is Plus, Minus, Interesting: Alloys should stated. have the same properties as the pure Plot and interpret graphs of melting metal. (Possible answers: Plus – point or boiling point for mixtures of properties of metals would varying compositions. be consistent and well known; Minus there would be no point in making – alloys as you could not improve their properties; Interesting would – metals have so many uses?) Lesson 8Ha: Rocks and their uses Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Rocks brainstorm n/a Resources n/a Students Recall what earthquakes and volcanoes Ask students to jot down as many from 8Ha investigate the are. facts about rocks and soils as they Exploring permeability of can. Students can then try to Science. rocks by finding
Developing Describe what happens during changes of State what happens at a material’s melting, freezing and boiling point. what is meant by: pure. State the meaning of: alloy. Explain why metals are often alloyed with other elements. Securing that a pure material has a fixed melting point and boiling point. Describe how impurities alter melting, freezing and boiling points. Identify a pure substance from its melting or boiling point. Use models to explain why converting pure metals into alloys often increases the strength of the product. Exceeding Describe some ways in which purity is stated. Plot and interpret graphs of melting point or boiling point for mixtures of varying compositions. Starter: Alloy demonstration Demonstrate melting solder, allowing the molten metal to drip into a tin lid. If possible, demonstrate how solder is used to join copper pipes or wires together. Exploring: Researching alloys Ask students to use and/or the Internet to find out about alloys. Explaining: Harder alloys Explain how the introduction of different atoms into a metal structure to make an alloy can make it harder and more rigid. Illustrate the idea by using marbles in a tray. Plenary: Thinking about pure metals and alloys Plus, Minus, Interesting: Alloys should have the same properties as the pure metal. (Possible answers: Plus – properties of metals would be consistent and well known; Minus – there would be no point in making alloys as you could not improve their properties; Interesting – would metals have so many uses?) Exploring: Researching alloys Students could compare the properties of the alloy with the properties of the component metals and add information about how the purity of alloys is stated. Resources from 8Ge Exploring Science. n/a Demonstrate melting solder, allowing the molten metal to drip into a tin lid. If possible, demonstrate solder is used to join copper pipes or wires together. Lesson 8Ha: Rocks and their uses Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Recall what earthquakes and volcanoes are. Starter: Rocks brainstorm Ask students to jot down as many facts about rocks and soils as they can. Students can then try to n/a Resources from 8Ha Exploring Science. n/a Students investigate the permeability of rocks by finding
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