WATERCOLORS! Use a big plastic deep storage container. line the bottom of the container with short wide plastic cups. fill most half full with clear water. then fill the others with primary colors: red, yellow, and blue water made with either liquid water color or food coloring mixed with water. give each child either a teaspoon or an eyedropper and let them become little scientists–they will discover how to make all kinds of new colors. This is a very inexpensive project that the kids love to do over and over!
When doing a color theme, I made goop in pie plates enough for 4 children, I put yellow food coloring in it, and then with the children grated up a 1/2 a lemon, the smell was wonderful and so was the texture, it became bitty you could see the shredded peel, this was very good when learning what kind of things are yellow.
An interesting variation or extension of Marilyn’s carnations in water with food coloring is to split the stem of a white carnation into three sections so that one is in plain water, one in red and one in blue. Ask the children to predict what will happen and wait to see. You will get a multicolored carnation!
I put a light bright in my science corner. The kids LOVE seeing the little colored pegs light up when they punch through the black construction paper!
Make 2 or 3 balloons out of white paper or poster board and laminate them. Then have 3 small containers with colored water in the 3 primary colors. Add small paintbrushes or eyedroppers and let kids put the colored water on the balloons to see what color their balloons end up!
For learning about secondary colors I mix shaving cream with liquid tempera (example: red shaving cream and yellow shaving cream). I place a dollop of each color on a paper plate or directly on the table. The children get to mix and “make” the new color!! They seem to remember better when they create the colors themselves!