Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"historia xxi matematicas" » "historia ii matematicas", "historia iii matematicas", "historia las matematicas", "historia aqui matematicas", "historia de matematicas"
"history in mathematics" » "history en matematicas", "history en matematica", "history and mathematics", "history of mathematics"
"history a mathematics" » "history of mathematics", "history la matematicas", "history de mathematica", "history and mathematics"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"history in mathematics\") OR (\"history a mathematics\"))) OR (\"historia xxi matematicas\"))~".
• Removing quotes may allow a broader search: (((( history in mathematics ) OR ( history a mathematics ))) OR ( historia xxi matematicas ))~.
• Adding a wildcard symbol may retrieve word variants: (((("history in mathematics") OR ("history a mathematics"))) OR ("historia xxi matematicas"))*.