EMMA: Anyway, shall we have a look at the procedure for our experiment? We’ll need to get going with it quite soon.
JACK: Right. So the first thing we have to do is find our seeds. I think vegetable seeds would be best. And obviously they mustn’t all be the same size. So, how many sorts do we need? About four different ones?
EMMA: I think that would be enough. There’ll be quite a large number of seeds for each one.
JACK: Then, for each seed we need to find out how much it weighs, and also measure its dimensions, and we need to keep a careful record of all that.
EMMA: That’ll be quite time-consuming. And we also need to decide how deep we’re going to plant the seeds – right on the surface, a few millimetres down, or several centimetres.
JACK: OK. So then we get planting. Do you think we can plant several seeds together in the same plant pot?
EMMA: No, I think we need a different one for each seed.
JACK: Right. And we’ll need to label them – we can use different coloured labels. Then we wait for the seeds to germinate – I reckon that’ll be about three weeks, depending on what the weather’s like. Then we see if our plants have come up, and write down how tall they’ve grown.
EMMA: Then all we have to do is look at our numbers, and see if there’s any relation between them.
JACK: That’s right. So …
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