Various shape activities. use Popsicle sticks to make shapes and talk about how many sides they have.
Montessori Pink Tower of Cubes and Brown Stair Extensions
WOW!! Fantastic extension for the Pink Tower, Broad Stairs and the Long Rods
Sensorial Extensions | montessori works
Color Tablet Game
cilinderblokken en gekleurde cilinders - MontessoriNet
Montessori Sensorial maze extension with the red rods and the number rods.
Butterfly - Montessori Blog: Red billets / The Red Rods
Post with every link imaginable for knobless cylinder ideas and printables.