Mix colors, experiment with science, and play with friends! Color Mixer Preschool Science Set by Learning Resources lets you do all three things at once. This educational toy features a unique science tool that allows kids to experiment with color mixing. This science toy has a 2-chamber flask with swirly straw to combine different colors liquid and see what the result color be. Bring yellow and red colored water together, and pour it out of a swirly straw to see that new color is orange! Just flip the flask over, and out the liquid goes! Color Mixer Preschool Science Kit from Educational Toys Planet is a color mixing lab for the youngest kids. Flask (without straw) measures 5.75 x 4.5 inches in diameter.