Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"teaching then matematica" » "teaching en matematica", "teaching en matematicas", "teaching de matematica", "teaching the matematica", "teaching in matematica", "teaching to matematica"
"teaching den matematica" » "teaching de matematica", "teaching en matematica", "teaching de matematicas", "teaching in matematica", "teaching and matematica", "teaching of matematica"
"teaching e matematica" » "teaching de matematica", "teaching en matematica", "teaching y matematica", "teaching the matematica", "teaching of matematica", "teaching in matematica"

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

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