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Science - Year 3/4A Spring 2

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Presentation on theme: "Science - Year 3/4A Spring 2"— Presentation transcript:

1 Science - Year 3/4A Spring 2
Plants A Feast of Flowers, Fruits and Seeds Session 1 Plenary PowerPoint © Original resource copyright Hamilton Trust, who give permission for it to be adapted as wished by individual users. We refer you to our warning, at the foot of the block overview, about links to other websites.

2 The structures in the centre of flowers are the reproductive parts
Remember - reproduction means making babies or offspring.

3 When animals have babies, a male and female will have mated first
When animals have babies, a male and female will have mated first. It takes a male and a female to make animal babies. Most plants make babies by producing seeds. A flower usually contains both male and female parts.

4 In some flowers it is very easy to spot the male and female parts because they are large. A good example is this lily. The female part is the sticky top (called a stigma) and the stalk holding it up (called a style). There are 6 male parts on this flower and each one is called a stamen. It is the job of the stamens to make pollen.

5 Let’s make a quick model of a flower in groups of 3

6 You will need: A sheet of A4 coloured card folded twice with a petal shape drawn on it. A piece of Plasticine™ or sticky tack about the size of a conker. A cotton bud with both ends cut off. 6 cotton buds with one end cut off.

7 One person will make the petals by cutting around the petal shape on the folded card. Take care to leave the corner uncut. When you open it out, it will look like this. Another person in the group will model the female part of the flower. Break off a small piece of Plasticine™ and model it into a stigma. It should have a flattish top. Press it onto the cotton bud with no ends (the style). The third person will arrange the stamens. They should roll the remaining Plasticine™ into a ball and stick the 6 cotton buds in to form a ring of stamens that splay out like this.

8 Now assemble your flower by putting all the parts together
Now assemble your flower by putting all the parts together. Can you point to … The stigma on top of the style Is this male or female? Female These male parts are called … The stamens


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