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The purpose of this study is to explore the design of outdoor play spaces in Cairo that provide an enjoyable play experience, along with opportunities for enhancing child social and cognitive developmental skills through play features incorporated in their play spaces to achieve this goal.

The study adopts a qualitative methodology to examine the effectiveness of natural, customized and elevated features on social and cognitive play behaviors of 6–8 year-olds. Data were gathered in three different play settings; a play space inside a social club, a park and a schoolyard. Data gathering relied on observations, written descriptions of play patterns and recordings of children's conversations. Additionally, the researcher utilized sketching diagrams to illustrate children's preferences for play with each feature.

The results of the study indicate that incorporating natural, elevated and customized play features into children's play spaces can enhance their environment and provide opportunities for fostering their social and cognitive skills.

This study reports the occurrence of indicative behaviors and not the exact measurement of skill development. Research involving children can have limitations in terms of reliability of results due to slight variations affected by unmeasurable circumstances.

The study makes a valuable contribution towards enhancing the quality of children's play spaces in Cairo by emphasizing the significance of providing opportunities for social and cognitive in addition to physical play.

Recently, children are no longer considered the passive users of their spaces; they are rather treated as active participants in those spaces design, with their own experiences. The present research aims to investigate the impact of selected architectural variables of kindergartens' design on the child's attachment to the place. It also examines the multi-complex approach in dealing with children in experiments.

Spatial analysis and photographing methods were used to analyse the educational spaces in two kindergartens in Greater Cairo, Egypt. In measuring children's place attachment, the research depended on a complex participatory approach, which comprised interviews with children, story completion, children's drawings and visual questionnaires.

The results of this qualitative study highlight that the design of a kindergarten classroom's details plays a significant role in strengthening the child's place attachment. The results also stress that connection and exposure to nature supports the child's spatial values.

The authors argue that this paper is considered a good basis for including children as the architectural design decision-makers for their buildings, by shedding light on the architect–user relationship and its impact on the design process. It demonstrates how architectural design of child-oriented spaces can promote a child's self-identity and perception.

Despite the dramatic increase in construction toward additive manufacturing, several challenges are faced using natural materials such as Earth and salt compared to the most market-useable materials in 3D printing as concrete which consumes high carbon emission.

Characterization and mechanical tests were conducted on 19 samples for three natural binders in dry and wet tests to mimic the additive manufacturing process in order to reach an efficient extrudable and printable mixture that fits the 3D printer.

Upon testing compressive strength against grain size, compaction, cohesion, shape, heat and water content, X-Salt was shown to record high compressive strength of 9.5 MPa. This is equivalent to old Karshif and fire bricks and surpasses both rammed Earth and new Karshif. Material flow analysis for X-Salt assessing energy usage showed that only 10% recycled waste was produced by the end of the life cycle compared to salt.

Findings are expected to upscale the use of 3D salt printing in on-site and off-site architectural applications.

Findings contribute to attempts to resolve challenges related to vernacular architecture using 3D salt printing with sufficient stability.

Benefits include recyclability and minimum environmental impact. Social aspects related to technology integration remain however for further research.

This paper expands the use of Karshif, a salt-based traditional building material in Egypt's desert by using X-Salt, a salt-base and natural adhesive, and investigating its printability by testing its mechanical properties to reach a cleaner and low-cost sustainable 3D printed mixture.