This is a project that is as fun as it is educational. Discovery bottles are also called science bottles and they allow your child to take on the role of a scientist. Kids are able to not only make a fun keepsake, but observe how different liquids interact with one another.
Have your child make a hypothesis of how they think the oil and water will interact with one another. Will they mix? Will they swirl around one another? What about about the glitter--will it stay at the bottom or float to the top?
First gather all your supplies for easy access, then add your glitter.
Then, using a funnel, fill the bottle half way with water. Then add your food coloring. Add just a few drops and keep adding till you get the desired color.
My girls had fun mixing the colors. They found out that the colors were very dark since there was not much water in the bottles.