Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /home/conscientiabeam/archive.conscientiabeam.com/plugins/generic/citationStyleLanguage/lib/vendor/seboettg/citeproc-php/src/StyleSheet.php on line 52

(1)

The Van Hiele Model in Teaching Geometry . 119 2022, 4 (1), 10-22. https://doi.org/10.18488/119.v4i1.3087.