Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"history ldla matematica" » "history da matematica", "history de matematica", "history la matematicas", "history ldlas matematicas", "history ldde matematicas", "history lden matematicas", "history a matematica"
"history la matematica" » "history las matematicas", "history de matematicas", "history en matematicas", "history a matematica", "historia la matematica", "history of matematica"
"history y matematica" » "history y matematicas", "history y matematico", "history de matematica", "history a matematica", "historia y matematica", "history of 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 ldla matematica") OR ((("history la matematica") OR ("history y matematica"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"history ldla matematica\") OR (((\"history la matematica\") OR (\"history y matematica\"))))".
• Removing quotes may allow a broader search: (( history ldla matematica ) OR ((( history la matematica ) OR ( history y matematica )))).
• Adding a wildcard symbol may retrieve word variants: (("history ldla matematica") OR ((("history la matematica") OR ("history y matematica"))))*.