Preschoolers learn by touching and doing, so an activity where they can explore seeds gives them both enjoyment and a learning experience. Sizes, shapes and colors of seeds vary. Let preschoolers guess which fruit or berry that will have the most seeds or the least seeds. Ask them to count seeds in different types of fruits like apple, passionfruit, cherry, lemon or kiwifruit. Preschoolers benefit from classifying things in different groups. Mix a selection of three to five different types of seeds, like tomato, sweet pea, radish and beans, on paper. Let them put the seeds into groups. Make a painting of seeds by spreading glue on a plastic lid and placing seeds on the lid. You will end up with a mosaic of seeds.
Create a learning activity where preschoolers make a counting and alphabet book. Pick needles from conifers like pines, and cypresses. Conifers leaves are narrow with a waxy coating to reduce the loss of moisture. On an index cards, mark numerals from 1 to 10. Let preschoolers color the numeral and then glue the matching number of pines on the card. Draw the outline of letters on paper. Spread glue on the shape and fasten seed scales from conifers on the letters. Alternatively, use scales, needles or small cones.
Talk with preschoolers about the importance of the chlorophyll for plants. Plants make their food by photosynthesis, which is carried out mainly in the leaves. A coloring substance called chlorophyll gives leaves their green color. Discuss what happens when you fall on grass and you are wearing trousers. Many preschoolers will say that they get green stains on the clothes. Break off blades of grass and place them on a paper plate. Put a sheet of paper over the grass. Place on a hard surface and ask preschoolers gently to twist their foot on the plate. They should not tear the paper. The paper will be green.
Read books like "Planting a Rainbow" by Lois Ehlert, and talk about how flowers have different colors to attract the attention of bees and butterflies. Discuss the different part of a flower like petal, stigma, anther and stem. Search the Internet for pictures of flowers. Look at the different shapes of the petals. Let preschoolers draw flowers in different shapes and colors. Use a large cardboard paper,arrange their flowers in different shades and make a collage in the shape of a giant flower.