From Edith Ackermann :

Constructionism is a constructivist learning theory which states that knowledge occurs best through building things that are tangible and sharable.

References

Constructionism vs Constructivism

What is the difference between Piaget's constructivism and Papert’s “constructionism”?

Integrating both perspectives illuminates the processes by which individuals come to make sense of their experience, gradually optimizing their interactions with the world