Exercise No.12


Exercise name:


Which cognitive area is it related to?

Abstract thinking, Attention, Concentrations, Memory, Visual perception

Description of the exercise:

3D printing of the pieces of a conventional tangram game which is a dissection puzzle consisting of seven flat polygons, called tans, which are put together to form shapes, for that the subject has to create different figures or just to solve the tangram (forming the square).

It is possible to compose all kind of schematic and basic figures and forms, and also numbers and letters.

It will be said or shown a specific figure (or even object) and subject will try to form it with the different pieces of the tangram. If the figure is shown initially, it will be covered before starting the task.

It could be used in every stage of dementia, but considering the difficulty.


The facilitator prepares the 7 tangram´s pieces. They give 1 minute to the subject to familiarise with the pieces and after that they mention one of the possibilities (house, candle, boat, fish, helicopter).

The facilitator could select different options to show to the subject, they could show one picture of the object or could form the figure step by step and the subject should remind every of those steps to form the figure. After that example is covered.

The subject could try to form the figure several times, they are expected to use less time with each attempt.

How can this model be used at home and in residential care/nursing homes?

Dementia affects a person’s cognitive functions, self-identity, memory and concentration. It develops gradually and leads to a change of personality. People with dementia have a problem with memory, which leads to recall difficulties and problems with speech, coordination, abstract thinking, concentration, planning, orientation with regard to place and time, frequent mood swings.

It could be applied in every place, it is not difficult to prepare, facilitator has to think about the figures to form and how to show to the subject. Even, in some cases, facilitator could form the figure step by step and the subject should remind every of those steps to form the figure.

This type of exercise will stimulate

  • Memory
  • Concentration
  • Planning
  • Visual-motor coordination
  • Spatial orientation
  • Abstract thinking
  • Attention

It’s an activity to be done with family members or even with formal caregiver. Or even it can be done by the patient by himself or herself. It would help the person to compose forms and simple objects by the pieces of the tangram

What benefits can be obtained with its use?

This exercise will help in several processes:

  • Use and train working memory in a safe environment
  • Concentration
  • Abstract thinking
  • Building figures through memory and different pieces

Technical specification of the model



Colour (One piece one colour):

Different colours

Suitable dimensions for its use in the classroom (MM):

Height: Between 0.5cm and 1cm

Overall tangram size (square): 20cm x 20cm

Should the piece be resistant or be subjected to stress?


Should it be printed during meeting with person with dementia, before or after?


Do you have to paint the model?


Number of pieces of which the model is composed:

7 (pieces of the tangram) + 1 (base)

Ensemble type if necessary (slot, clip, screwed ...)


Accuracy and definition required. (Quality) Low, mid or High.



STL files viewer

Good luck!