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 Introduce Geometry as children build 2-D and 3-D shapes
When Mathew realises Simon is a little different to his other friends
in the correct order
Basic self-help
multicultural
Philip Harris Electromagnet REMOVE Â Introduce Geometry as childrenA powerful electromagnet comprising a 'U' shaped soft iron core 100mm x 65mm overall. Formed from a 16mm diameter bar. The windings are of 0. 9mm enamelled copper wire wound on insulation bobbins, connected in series and provided with 4mm sockets. The ends of the core are carefully ground to provide optimum magnetic contact with the armature, which is also ground flat. Winding resistance is approximately 0. 5 A force of about 75N is required to pull
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