I love being cheap! Especially when it comes to teaching and teaching science! As I sit through various trainings, I love to take an idea and figure out how to do the same thing for less. Here is an example of one of my favorite activities to do with preschoolers.
The gist of the activity deals with how do you form various colors from the three main primary colors. You can find everything for this activity at Wal-Mart!
In the cooking section, go and get 3 condiment bottles-you can find them for about 99cents! Then go to the beauty section and find clear hair gel. Next, go to the paper/plastic section and find zip-lock sandwich baggies. Lastly, go to the baking section and find the food coloring.
In the clear condiment bottles, put some hair gel in all three bottles. Then add the food coloring and shake really hard! This will mix up the color throughout the gel. Once you are done-you will have three bottles with your three primary colors.
The next step involves squeezing some out into your plastic bag. Let's say we want to make green-put a dab of blue hair gel and the yellow hair gel, seal the bag, and then using your finger, move the gels together. Eureka! You have just made green. I know it is hard to tell from my photos-but trust me-the kids love this! Great activity for motor skills!