Electricity in for 8 – 10 Year Olds cycle 3

Authors : Jean-louis Alayrac(plus d'infos)
Summary :
The students are asked to design simple circuits (revision of the previous school years) with the added difficulty of connecting batteries. The students then manipulate motors, forcing them to consider the direction of rotation in relation to the battery connection. In an extension of work done previously, students must build a “tester” circuit to test materials. The last and most important part of the module is to study the circuits comprising at least two devices in operation to differentiate series circuits from parallel circuits.
Publication : 28 August 2012
Objectives :
Connect batteries in an electric circuit. - Observe the direction of rotation of a motor in relation to the connection of a battery. - Transition from a “conducting thread/insulator” to “insulating material/conductor” – Reflections on the dangers of electricity from the study of objectsdevices from everyday life. - Differentiating “series” circuits from “parallel” circuits (reading and decoding of schematic diagrams: locating short circuits, etc.).
Duration :
6 séances
Note :
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Session 1: what the students already know: complete a questionnaire to find out what the students already know.

Session 2: simple circuits—revision: illuminate a light bulb far away from the battery and be able to control the bulb without disconnecting the cables.

Session 3: in what direction? Constructing an automatic eraser system from a normal eraser and a motor implanted in the eraser.

Session 4: insulators—conductors—construction of a circuit tester to test whether a material is a conductor or insulator.

Session 5: series and parallel circuits: installation of electricity in a simplified little house.

Session 6: proposals for an evaluation.

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