Here's a couple ideas I stole from a magazine:
1-Grab a pail, and scout your backyard or the beach for smooth, flat stones in various shapes & sizes.
2-Have your child paint the surface of each rock with acrylic paint. Experiment with fun colors like hot pink and electric green. Let dry.
3-To bring the fish to life, glue on a googly eye and a feather for the tail. Be creative with the details-use the wooden tip of a paintbrush dipped in paint to add scales, squiggles, polka dots, or a smile.
Materials: Basket-style coffee filters; scissors; cup of water; washable markers in several colors.
1-Cut out the center circle of the coffee filter. Use a pencil to poke a hole in the middle of the circle.
2-Draw a ring of dots and lines half an inch from the hole with different colored markers.
3-Cut one wedge out of the leftover scalloped part of the coffee filter, and roll it up to form a wick. Push the wick halfway through the hole so it sticks out on both sides.
4-Set the filter on top of the cup so that the wick touches the water. Watch as the ink slowly travels to the edge of the circle.
5-Try other colors and new patterns. Make a prediction about what will happen before you set the filter on top of the cup.
As the water moves through the fibers in the wick toward the edges of the filter, it dissolves the ink and pulls it outward. Some colors dissolve more easily than others, so they travel different distances.
Materials: Several balloons; water; freezer; deep bowl; flashlight.
1-Put equal amounts of water into the balloons so they are each about 3 inches in diameter. Let any air out before you tie them off, and put them into the freezer.
2-The next day, cut away the balloon with scissors, and examine the ice inside.
Do you think the ice balls will float or sink? Fill the bowl with water and find out.
Sprinkle salt on an ice ball, and discover what happens. Sprinkle sugar on an ice ball and see what happens (compare the results).
Go into a dark room or closet, and shine a light through one of the ice balls. Observe what happens.