SUE: OK, that doesn't sound too bad.
MIKE: OK, ready for number two?
SUE: Hmm, hmm.
MIKE: Now this one is called ‘Unusual Measures ofLengths’, and you basically use lots of paperclips.The kids go around the class measuring things - youknow, how long the desk is, and that sort of thing,um, and then they all compare their answers. Er,and, basically, because not all paperclips are thesame lengths, they should come up with somestrange answers. It’s supposed to demonstrate theimportance of having fixed units of measurement.
SUE: Hmm, yes, that’s not bad.
MIKE: OK, now for number three you need rock salt or copper sulphate.
SUE: Oh, I’m not sure about that!
MIKE: Well, just put down the rock salt then, um, apart from that you only need a jar ofwater. Um, and basically you dissolve lots of salt into the water and watch the crystals form, soit basically teaches the kids about growing crystals.
SUE: I suppose it would be nice to grow something. Hmm, let’s move on and have a look atnumber four.
