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.

Kids - Math Making Patterns with Lego and Egg Cartons - The Imagination Tree

Fantastic ideas for lego maths games - fun learning! We did so much of this in Kindergarten - measuring with Lego, Popsicle sticks, kids!