This is a perfect activity! Kids will have tons of fun sifting and pouring, while working diligently on thinking and problem solving, developing sensory motor skills; as well as practicing small motor skills and sorting skills.
Create the sensory bins by adding all the materials to the plastic bin. Place the bin in an appropriate area for play and encourage the child to play with you.
As they explore, talk about what sorting means. You can ask questions like “why do you think people sort things?” to get the child thinking.