Plant Seeds and Watch Them Grow
Now that it’s summer, plants and flowers are in full bloom. One easy activity for kids is to have them choose some seeds, plant them in cups or small pots filled with soil and watch them grow. Older kids can learn responsibility by watering and caring for their plants.
Talk about how plants grow from seeds to plants and their life cycles. Teach them what plants, as living things, need water, food, sunlight and air to survive.
How Plants Use Water
As a secondary experiment, you can demonstrate how plants use water. Get a glass jar or cup and place several stalks of celery with the leaves on them in a container filled with water tinted with food coloring. After a day or so, it will become noticeable that the water circulates throughout the plant, as the leaves will show tints of the food coloring in them.
Track & Measure Growth
Have each child start a journal to track the progress of your plant's growth from seed to full-grown plant by measuring its changes every day or two. If you plant something that will eventually get too big for its container, get the kids involved in planting it outside once it is big enough to transfer outdoors.
I like working with pumpkins and sunflowers. If each kid’s pumpkin matures and produces, they will have their own pumpkins to carve come Halloween as well as pumpkin seeds to cook and eat or dry and save to plant again next year. Once sunflowers mature, you can observe how the birds and butterflies feed on them and in the fall, you can remove the flower from the stem and remove the seeds (the large sunflowers are better for this project) and even dry them and cook them if you want. You can spend all summer watching science unfold in front of you.