div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: paginesuabcatpaginesuabcatnuria_planassitespaginesuabcatnuria_planas · language diversity dates back to 1972 and the second International Congress on Mathematical Education src=https:reader031fdocumentsusreader031viewer20220304095a9295e17f8b9ad96f8b72fahtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: paginesuabcatpaginesuabcatnuria_planassitespaginesuabcatnuria_planas · language diversity dates back to 1972 and the second International Congress on Mathematical Education src=https:reader031fdocumentsusreader031viewer20220304095a9295e17f8b9ad96f8b72fahtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: paginesuabcatpaginesuabcatnuria_planassitespaginesuabcatnuria_planas · language diversity dates back to 1972 and the second International Congress on Mathematical Education src=https:reader031fdocumentsusreader031viewer20220304095a9295e17f8b9ad96f8b72fahtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: paginesuabcatpaginesuabcatnuria_planassitespaginesuabcatnuria_planas · language diversity dates back to 1972 and the second International Congress on Mathematical Education src=https:reader031fdocumentsusreader031viewer20220304095a9295e17f8b9ad96f8b72fahtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: paginesuabcatpaginesuabcatnuria_planassitespaginesuabcatnuria_planas · language diversity dates back to 1972 and the second International Congress on Mathematical Education...