Olkun, SinanSinoplu, N. Beylem2019-04-242019-04-242008http://hdl.handle.net/20.500.12575/63186The purpose of this research was to investigate the effect of pre-engineering activities on 4thand 5th-grade students understanding of rectangular solids made of small cubes. The study utilized a pretest-posttest experimental design with 121 students. During a two class-hour instruction, experimental groups constructed simple toys such as cars, ships, and trucks out of wooden cubes and triangular prisms. Control groups continued on their regular in-class activities. Results showed that experimental groups, with no gender differences, statistically significantly improved their understanding of three-dimensionality and spatial structuring of three-dimensional arrays of cubes. Similar activities can be used in classrooms to help students mentally construct three-dimensionality and improve their understanding of the spatial structure of rectangular buildings made of small cubes.enthree-dimensionalityrectangular buildingsspatial structuringvolumeArticle819