Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"history and matematicas" » "history en matematicas", "history las matematicas", "history de matematicas"
"history de matematica" » "history de matematicas", "history la matematica", "history en matematicas", "historia de matematica", "history of matematica", "history a matematica"
"historia y matematica" » "historia y matematicas", "historia y matematico", "historia e matematica", "historia de matematica"

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 matematicas\") OR (\"history de matematica\"))) OR (\"historia y matematica\"))~".
• Removing quotes may allow a broader search: (((( history and matematicas ) OR ( history de matematica ))) OR ( historia y matematica ))~.
• Adding a wildcard symbol may retrieve word variants: (((("history and matematicas") OR ("history de matematica"))) OR ("historia y matematica"))*.