Plenary: Thinking skills What Was The Question: extension (Possible question: What is the name for the amount a spring stretches when there is a force on it?); it will not go back to its original length (Possible question: What happens if a spring is stretched beyond its elastic limit?); if the force doubles the extension doubles (Possible question: What does Hooke's law say about springs?) Lesson 7Kc: Friction Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Woodpecker n/a Resources n/a Demonstrate State what is meant by friction. Show students the woodpecker toy from 7Kc how a linear air Describe how friction forces affect with the woodpecker stationary at the Exploring track works and movement. top of the pole and then moving, to Science. show students Describe some ways in which friction explain friction. Get students to how long a can be changed. sketch a diagram of this toy, glider can Identify simple situations in which annotating it to explain how it works. continue to friction is helpful or not helpful. move if the Securing Exploring: Light a fire track is set up Recall some effects of frictional forces. Ask students to use the Internet to with rubber Explain some ways in which friction find out how to light a fire without bands at each can be changed. using matches. Ask them to explain end. Suggest how and why friction has been the methods used in terms of friction. reduced or increased in unfamiliar situations. Explaining: Lubrication demonstration Exceeding Demonstrate how a linear air track Draw lines of best fit on scatter works and show students how long a graphs. glider can continue to move if the track is set up with rubber bands at each end. Get students to explain
Plenary: Thinking skills What Was The Question: extension (Possible question: What is the name for the amount a spring stretches when there is a force on it?); it will not go back to its original length (Possible question: What happens if a spring is stretched beyond its elastic limit?); if the force doubles the extension doubles (Possible question: What does Hooke's law say about springs?) Lesson 7Kc: Friction Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing State what is meant by friction. Describe how friction forces affect movement. Describe some ways in which friction can be changed. Identify simple situations in which friction is helpful or not helpful. Securing Recall some effects of frictional forces. Explain some ways in which friction can be changed. Suggest how and why friction has been reduced or increased in unfamiliar situations. Exceeding Draw lines of best fit on scatter graphs. Starter: Woodpecker Show students the woodpecker toy with the woodpecker stationary at the top of the pole and then moving, to explain friction. Get students to sketch a diagram of this toy, annotating it to explain how it works. Exploring: Light a fire Ask students to use the Internet to find out how to light a fire without using matches. Ask them to explain the methods used in terms of friction. Explaining: Lubrication demonstration Demonstrate how a linear air track works and show students how long a glider can continue to move if the track is set up with rubber bands at each end. Get students to explain n/a Resources from 7Kc Exploring Science. n/a Demonstrate how a linear air track works and show students how long a glider can continue to move if the track is set up with rubber bands at each end.
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