Recommended age:  

3-6 years


Gives the child a muscular impression of length. gives the child a visual impression of the succession of length. Indirectly prepares the child for lineas measurement. Prepares the child for the exercises with the number rods. 

Control of error: If the rods are badly placed, ask the child to feel down the left side to make sure that the ends are straight. The child can then recognize any mistakes easily.

See the "Technical Description" section for the procedure for presenting this material to the child. 

Article code:



The Red Rods develop visual discrimination of length, while height, color and width remain constant. Ten solid wooden rods increasing in length in equal units from 10 cm to 1 meter.


  1. Spread a mat on the floor.
  2. bring the rods to the mat, one at a time. They should be held by spreading the arms across the length of the rod and holding it at both ends.
  3. Place each rod on the mat. Use the space at the lower end but more towards the right side of the mat. The rods should not be placed in order of size. Mix them so that the child would have to look at them to decide which to choose.
  4. Take the longest rod by holding it with both hands on either side, and place it at the top left hand corner of the mat.
  5. Take the next longest rod and place it in fornt of the first rod. The rods should be placed so that all edges are even on the left side.
  6. Continue in this way until all the rods are in a stair formation. give the child a chance to observe the information.
  7. Undo the information by removing one rod at a time and placing them to the right of the mat.
  8. Continue in this manner until all the rods have been removed.
  9. At this point, the child may ask you, or you may ask the child to try the exercise.
  10. At the end of the exercise let the child help you to take the rods one by one, back to their place on the shelf.
  11. Let the child help to roll the mat and put it away. 


Place the rods in the same formation as before. Take the shortest rod and place it next to the second rod. Do this in succession for the space next to each rod. This helps the child to observe the difference in dimension that exits between each rod. The difference between any two rods in succession is always the shortest rod. 


Why choose GAM?

Pedagogically specialized environments. Certified quality of materials and products.

Innovative projects

Our Research & Development Department, with the advice of experts from various fields, constantly works on the technical perfection and stylistic renewal of our lines and products.

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Personalized solutions

Multiyear warranties and after-sales service. Corporate and product safety certifications. Design layouts and custom furnishings. Technical and pedagogical consultancy.

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Pedagogical approach

The solutions offered are tailored to the customer's needs: from the first contact to the assembly of the furniture, Gonzagarredi follows its customers every step of the way

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High quality products

Our products conform to the latest technical standards in force in the sector with non-toxic paints and dyes, Class E1 formaldehyde limits, Class 1 wooden furniture on request and Class 1IM soft elements, according to Italian Ministerial Decree of 16th July 2014. All have been successfully tested in accredited laboratories for safety, resistance and toxicity.

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