Recall how the different wires are Exploring: two clamp connected in a plug. Exploring: Testing fuse wire Testing fuse wire stands and Securing Provide students with lengths of fuse Encourage making it part Explain why electricity is more wire of different ratings and ask them students to of a circuit. convenient than other sources of to find out the maximum current for consider the energy, and classify some of its uses. each wire. inherent Students use Explain some safety precautions to be inaccuracy of lengths of fuse followed when using electricity. Explaining: Wiring plugs attempting to wire of different Explain how a fuse works. Show students how to wire a plug, determine the ratings to find Explain how a domestic ring main is a including precautions such as making current at the out the form of parallel circuit. sure no strands of wire are sticking exact moment maximum Identify errors in the wiring of a plug. out, the outer cable is held by the that the wire current for each Exceeding cable grip, etc. melts, and ways wire. Apply their knowledge of voltage, of allowing for current and electrical safety to novel Plenary: Thinking skills this, such as Show students situations. Odd One Out: light bulb filament, repeating the how to wire a connecting wire, fuse. (Possible measurement plug. answers: the connecting wire as it is several times. not designed to convert electrical energy into other forms of energy; the fuse is the only one designed to melt.) Lesson 7Ka: Forces Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Forces concept map n/a Resources n/a Students Describe what a force is. Ask students to create a concept map from 7Ka practice using Recall the names of simple forces. to summarise what they already Exploring force meters by State what is meant by: contact force, know about forces. Science. weighing a non-contact force. range of objects Recall the effects of forces on an Exploring: More forces and other object. Give students practice using force forces. State what is meant by: friction, air meters by asking them to weigh a resistance, water resistance. range of objects and also to measure Securing other forces, such as the force Classify forces as contact and required to open a door, to drag a
Recall how the different wires are connected in a plug. Securing Explain why electricity is more convenient than other sources of energy, and classify some of its uses. Explain some safety precautions to be followed when using electricity. Explain how a fuse works. Explain how a domestic ring main is a form of parallel circuit. Identify errors in the wiring of a plug. Exceeding Apply their knowledge of voltage, current and electrical safety to novel situations. Exploring: Testing fuse wire Provide students with lengths of fuse wire of different ratings and ask them to find out the maximum current for each wire. Explaining: Wiring plugs Show students how to wire a plug, including precautions such as making sure no strands of wire are sticking out, the outer cable is held by the cable grip, etc. Plenary: Thinking skills Odd One Out: light bulb filament, connecting wire, fuse. (Possible answers: the connecting wire as it is not designed to convert electrical energy into other forms of energy; the fuse is the only one designed to melt.) Exploring: Testing fuse wire Encourage students to consider the inherent inaccuracy of attempting to determine the current at the exact moment that the wire melts, and ways of allowing for this, such as repeating the measurement several times. two clamp stands and making it part of a circuit. Students use lengths of fuse wire of different ratings to find out the maximum current for each wire. Show students how to wire a plug. Lesson 7Ka: Forces Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Describe what a force is. Recall the names of simple forces. State what is meant by: contact force, non-contact force. Recall the effects of forces on an object. State what is meant by: friction, air resistance, water resistance. Securing Classify forces as contact and Starter: Forces concept map Ask students to create a concept map to summarise what they already know about forces. Exploring: More forces Give students practice using force meters by asking them to weigh a range of objects and also to measure other forces, such as the force required to open a door, to drag a n/a Resources from 7Ka Exploring Science. n/a Students practice using force meters by weighing a range of objects and other forces.
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