This experiment was very nostalgic for me, I remember being very excited to show my parents my runner bean I had grown at school. It is simple yet very effective and fun way to show children what plants need to grow.
Firstly we looked at the effect that light has on the growth of plants. We filled two glasses full of wet cotton wool balls and planted the beans between the cotton and the glass so we could easily observe what was happening. We then used lolly pop sticks to label one glass light and the other dark.
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| Light vs Dark |
The light glass was then placed on a sunny window sill and the dark was placed inside a cupboard. Over the next couple of weeks we checked our beans at the same time each day, watering when necessary and took pictures of our observations.
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| Day two |
After two days we had our first sprout. My children were a little surprised to find that it was the bean planted in the dark. I explained to them that plants were very clever and the bean planted in the dark will grow faster because it needs to grow higher to try find some sunlight.
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| Day four |
On day four the light plant had finally grown a sprout. In hind sight I should of soaked the beans in water over night before starting the experiment to make it a little quicker. My children get really excited checking on their beans everyday but this is quite a long experiment, so it is a good idea to also plant some quick growing plants in the garden or grow a sproutapouch. Children can get quite impatient waiting for things to grow.
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| Day 9 |
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| Day 10 |
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| Day 11 |
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| Day 12 |
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By day twelve both plants had sprouted and had a stem and two leaves. The noticeable difference being that the dark plant was taller paler and had smaller leaves.
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| Day 13 |
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| Day 16 |
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