Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"history den matematicass" » "history de matematicas", "history en matematicas", "history de matematica", "historia del matematicass"
"historia den mathematica" » "historia de mathematica", "historia de matematica", "historia en matematica", "historia del mathematica", "historia en mathematica"
"historia e matematica" » "historia de matematica", "historia en matematica", "historia y matematica"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("history den matematicass") OR ((("historia den mathematica") OR ("historia e matematica"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"history den matematicass\") OR (((\"historia den mathematica\") OR (\"historia e matematica\"))))".
• Removing quotes may allow a broader search: (( history den matematicass ) OR ((( historia den mathematica ) OR ( historia e matematica )))).
• Adding a wildcard symbol may retrieve word variants: (("history den matematicass") OR ((("historia den mathematica") OR ("historia e matematica"))))*.