1. KS 3 laboratory Variables and patterns De Lisle Catholic Science College Science department

2. Variables, values and patterns Predicting from patterns investigation Virtual laboratory: Variables and patterns menu

3. Relationships between variables VariablesValues shape size colour square, triangle large, medium, small red, blue All of the squares are - The red shapes are all - blue triangles No relationship between colour & No relationship between size & size shape Complete the table Show patterns

4. Predicting from patterns A blue object is hidden in Box 1 Predict its shape: A triangle-shaped object is hidden in Box 2 Predict its colour: Box 2 Box 1 Box 2 Test predictions

5. 1 2 3 4 575g 336g 575g 336g Relationships between variables (contin…) VariablesValues mass size colour 336g, 575g large, small red, blue All of the large jars are - The red jars are all - blue small No relationship between mass & No relationship between colour & size mass Show patterns Complete the table

6. Predicting from patterns A blue jar is hidden behind box 1 Predict its size: Box 1 A red jar is hidden Behind box 2 Predict its mass: Box 2 Because there is no relationship between colour and mass it is not possible to make a prediction about the mass of the red objects Large Test predictions

7. Holly berry investigation Hypothesis (idea to test) –if there are many berries on holly bushes in autumn, then the winter will be mild Plan –make observations of the number of berries on holly bushes in autumn and the coldness of winters for several years

8. Holly berry investigation (contin…) YearBerriesWinter 2020ManyMild 2021ManyMild 2022FewCold 2023FewCold 2024ManyMild 2025FewCold Observations

9. Holly berry investigation (contin…) Variables –type of winter Values: cold, mild –number of berries Values: many, few Prediction from the pattern –from the observations we can infer the following relationship: many berries – mild winters few berries – cold winters Click if you wish to go back to view observations

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