STEM Classroom Kits ; Seed Growth Maze
Are there any STEM classroom kits ? Yes, this is a science experiment for primary school .
The plant maze consists of three major structures,namely a grow chamber, a water pot, and a solid container. Components are in the manuals of this kit.
There are three experiments and how it works?
1,The roots grow down and the shoots grow up because of an effect called geotropism. This means the root and shoot detect the Earth’s gravity.One side of a root or shoot grows more than the other side. so that they bend over.
2.Plants always seek out light, because they need light to keep growing. Light enters the maze through the top, and a little bounces down through the maze. The plants grown towards this light. This effect called phototropism. When light shines from one side of a shoot, the shoot grows more on that side, which makes the shoot bend towards the light.
3.The plane in the uncovered side gets plenty of light from different directions. Its shoot divides and grows up and outwards. The plant in the covered side only gets light from the hole above it. It puts all its energy into growing upwards towards the light. so it gets taller more quickly than the other plant.
In forests, new trees grow towards gaps into the forest canopy where light shines through from above.
Plants grow towards the light because they need light to grow. in their leaves, the energy from sunlight is used to combine carbon dioxide from the air and water from soil to make sugars that the plant uses as good. This process is called photosynthesis .
Growing More Plants.
Try growing different sorts of plants in you maze, such as potatoes, carrots and onions. For each plant, put fresh soil in the soil container and fresh water in the base. Cut eyes and shoot from the old potato, and push this into the soil. Or try planting carrot or onion. Each time, you can watch the roots grow down and the shoots grow up.