Kids become engaged in science when it is hands-on. One way to help children learn about how things grow is to help them to grow their own plants. Growing a potato in a glass of water will show children how plants put out roots and sprout leaves. Growing a potato in a glass is a similar project to growing an avocado in a glass. The plant will generally begin to sprout roots and grow within a few days.
Examine a potato to determine which end has the most eyes, which is where sprouts will form. If you are using a sweet potato, turn the potato so that the pointed end will be placed in the glass.
Insert four toothpicks into four sides of the potato at a point two-thirds of the way from the lower end.
Insert the potato into a glass so that the toothpicks hold the potato in the mouth of the glass.
Fill the glass with water. Place the glass in a sunny windowsill and change the water every two to three days.