Select Page

Discrimination of Grains

  1. Home
  2. Knowledge Base
  3. Sensorial
  4. Stereognostic
  5. Discrimination of Grains


A tray with three or four small bowls and one larger bowl.
The sets contain items differentiated by contrasting features.
A blindfold.


  1. Invite the child to the lesson.
  2. With the tray of bowls at your table, choose a bowl.
  3. Carefully feel the grains one at a time, rubbing the grain between your thumb and pointer finger. You may even rest the grain in your palm to examine it further.
  4. Invite the child to explore the grains and to carefully feel them too.
  5. Once all three types of grains have been explored, remove the grains one at a time from their bowls, and place them in the larger bowl.
  6. Pick up a random grain and place it back into its bowl.
  7. Repeat this for the other types of grains so they each have one grain in their bowls.
  8. Continue sorting the grains back into their bowls until they have all been sorted properly.
  9. Ask the child to watch you as you combine the three types of grains into the large bowl again.
  10. This time, put on the blindfold.
  11. Sort the grains, discriminating only by feeling of them.
  12. Once you think all the grains have been sorted, carefully feel around the whole entire bowl to ensure no grains have been left behind.
  13. Remove the blindfold and check your work.
  14. Invite the child to perform the exercise.


Independent work as shown.


The names of grains.

Control of Error

Visual upon removal of the blindfold.

Direct Purpose

Refinement of the stereognostic sense.


3 1/2 to 4, older for finger grains.


You can have three trays of this material that differ in grains and challenge.

Items that can be used: small wooden beads, buttons that are the same size but different shapes, or buttons that are the same shape but different sizes, shells, large grains such as beans and peas, small grains such as rice and corn.

Was this article helpful?