Small, Medium, Large

Here is a simple classification exercise. This would be classed as a later Sensorial exercise as it uses abstract images rather than concrete material.

I got these cards from Montessori Printshop. The best thing is they were free to download! So I decided to put small, medium and large onto 3 different colour pages, 

orange for small, 

 green for medium

and red for large

At the back of each card I put the corresponding colour dot (control of error).

Having an inbuilt control of error means that the child can see for themselves if they are right or wrong, this is called auto-education or self-correcting. The child learns from his/her mistake and therefore the teacher/parent doesn't have to correct them, (auto-education increases a child's self-confidence). Before this exercise children would have graded concrete materials like the Knobbed Cylinders, Knobless Cylinders ,the Pink Tower, the Long Rods, the Broad Stairs and the Colour Tablet boxes (to name just a few!)  Further possible extensions could be

big, bigger, biggest

small, smaller, smallest 

Here it is all ready for the shelf except that it should be on a tray! Forgive me!

I would probably have the words stuck onto the pages in the classroom but for the purpose of the post I didn't.