Instead of numbers write the color word on the bottles. Sort pom-poms by color. Empty each bottle and count the pom-poms. Then record how many pom-poms were in each bottle. Add the two colors together for addition practice.
One idea on how to set up sci center…set list of themes to cover throughout the year. Change out sci center each month based on theme Setting up a science center…pick themes to cover throughout the year.