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 social mathematics", "historia del mathematics"
"history and matematica" » "history en matematica", "history en matematicas", "history la matematica"
"historia y mathematics" » "historia in mathematics", "historia of mathematics", "historia y matematicas", "historia de 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 and matematica\") OR (((\"historia y mathematics\") OR (\"historia oral mathematics\"))))~".
• Removing quotes may allow a broader search: (( history and matematica ) OR ((( historia y mathematics ) OR ( historia oral mathematics ))))~.
• Adding a wildcard symbol may retrieve word variants: (("history and matematica") OR ((("historia y mathematics") OR ("historia oral mathematics"))))*.