Children observe the growth of flowers with this science project. Cut a small hole in the bottom of a paper cup and have children decorate it with crayons -- this will serve as the flower pot. Once the cups are decorated, provide them with potting soil and instruct them to fill the cups with soil. Give each child a flower seed -- any type of seed you would like -- and have them press it into the soil with their fingers and cover it up. Place the cups in a sunny window. Let the children water their flower seeds every day and observe what happens. Have them use a magnifying glass to get a closer look at the soil and draw a picture in a journal each day to document what happens to their seeds. When the flowers sprout, allow them to take them home and plant them.
Let children explore the power of magnetism with a magnetic bottle. Fill an empty water bottle with colored sand or water, cut up pipe cleaners and colored paper clips. Provide them with a magnetic wand and instruct them to move the wand around the outside of the bottle. The pipe cleaners and paper clips will be attracted to the wand and will move around the bottle with the wand.
Put students' sense of smell to the test with this activity. Fill individual brown paper bags with different items that have distinctive smells -- chocolate, a bar of soap and pine needles, for example. Lay out the different items that you've placed in the bags and allow students to smell them so that they are familiar with the scents. After sampling the scents, have children open the bags, smell what's inside and try to determine what is inside based on the scent.
Explore buoyancy with this science investigation. Fill a bowl with water and set out a variety of different objects that will either float or sink -- pennies, packing peanuts, a sponge, a feather and a block, for instance. Ask students to pick up each object and predict whether they will float or sink. Write down their predictions on chart paper. Allow them to place the items in the water to prove or disprove their predictions.