Describe different types of observations and data that can be Explaining: Demonstrations used as evidence. Carry out some demonstrations to Identify scientific questions, confirm how particle theory explains hypotheses and predictions. observations. For example, show Describe how evidence and solids do not change shape but liquids observations are used to develop a do. hypothesis into a theory. Explain how evidence and observations Plenary: Correcting misconceptions support or do not support a certain Ask students to write down an theory. incorrect idea about particles. Pass the paper to the next student who reads it and writes the correct view below it. A third student, after reading both ideas, writes down the part in the previous topic/lessons they thought best explained the idea. Lesson 7Gc: Brownian motion Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Thinking about particles Exploring: Resources Converting Set up a Describe Brownian motion. Consider All Possibilities: A tiny speck Measuring the from 7Gc between demonstration State where Brownian motion can be floating on some water is seen to be very Exploring metres and of Brownian observed. moving slightly. What ideas could Extend this Science. nanometres. motion using a Securing explain this movement? (Possible activity by asking smoke cell. Explain how Brownian motion occurs, answers: it is being blown by the students to using particle theory. wind; someone is blowing on it; the measure some Convert metres to nanometres and speck is a tiny organism that is objects and ask vice moving; water particles are bumping them to convert Exceeding into it.) their Explain how evidence from Brownian measurements in motion is used to support the particle Exploring: Measuring the very small metres and theory. Introduce ideas of units and scales. centimetres into Give students measurements to millimetres, convert, including the nano-scale: micrometres and nanometres.
Describe different types of observations and data that can be used as evidence. Identify scientific questions, hypotheses and predictions. Describe how evidence and observations are used to develop a hypothesis into a theory. Explain how evidence and observations support or do not support a certain theory. Explaining: Demonstrations Carry out some demonstrations to confirm how particle theory explains observations. For example, show solids do not change shape but liquids do. Plenary: Correcting misconceptions Ask students to write down an incorrect idea about particles. Pass the paper to the next student who reads it and writes the correct view below it. A third student, after reading both ideas, writes down the part in the previous topic/lessons they thought best explained the idea. Lesson 7Gc: Brownian motion Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Describe Brownian motion. State where Brownian motion can be observed. Securing Explain how Brownian motion occurs, using particle theory. Convert metres to nanometres and vice Exceeding Explain how evidence from Brownian motion is used to support the particle theory. Starter: Thinking about particles Consider All Possibilities: A tiny speck floating on some water is seen to be moving slightly. What ideas could explain this movement? (Possible answers: it is being blown by the wind; someone is blowing on it; the speck is a tiny organism that is moving; water particles are bumping into it.) Exploring: Measuring the very small Introduce ideas of units and scales. Give students measurements to convert, including the nano-scale: Exploring: Measuring the very Extend this activity by asking students to measure some objects and ask them to convert their measurements in metres and centimetres into millimetres, micrometres and nanometres. Resources from 7Gc Exploring Science. Converting between metres and nanometres. Set up a demonstration of Brownian motion using a smoke cell.