Test Tube Color Sorting Activity for Children - Preschool and Toddler Sorting Activity This activity is a fun way to sort colors! Children sort the pom poms into the clear test tubes with colored lids. The tubes are removable and are held upright in the sorting stand. Remove the lids and drop the poms into the tubes to fill them up! Dimensions: - Base measures 6" x 2.75" (color of base varies) - Tubes measures 6" long and 1.25" wide. - 1/2" pom poms Set with 4 Colors (Red, Yellow, Green, Blue) This learning activity focuses on matching and sorting colors. Sorting objects is an important skill for children because our world is organized into sensible groups or categories. These opportunities to sort items by like characteristics help young learners fine tune their visual discrimination skills to better observe how things are alike and different, which are essential early literacy and math skills I love this activity because it adds the color sorting element to my "simply a tube and poms" activity that children love. It is so much fun for littles to drop objects into containers and dump them out again, now they can sort the poms at the same time!