Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"historia oral mathematics" » "historia of mathematics", "historia rural matematicas", "historia in mathematics"
"historia del matematico" » "historia de matematica", "historia de matematicas", "historia en matematica", "historia den matematicas", "historia dla matematica", "historia de matematico", "historia y matematico"
"historia el matematico" » "historia en matematicas", "historia la matematica", "historia en matematico", "historia e matematico", "historia de matematico"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("historia oral mathematics") OR ((("historia del matematico") OR ("historia el matematico"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"historia oral mathematics\") OR (((\"historia del matematico\") OR (\"historia el matematico\"))))".
• Removing quotes may allow a broader search: (( historia oral mathematics ) OR ((( historia del matematico ) OR ( historia el matematico )))).
• Adding a wildcard symbol may retrieve word variants: (("historia oral mathematics") OR ((("historia del matematico") OR ("historia el matematico"))))*.