Mirar el video, que explica la proporcionalidad.
https://www.bing.com/videos/search?view=detail&mid=B6667D77633D6476B15FB6667D77633D6476B15F&q=video+para+ni%C3%B1os+de+proporcionalidad&shtp=GetUrl&shid=2216cc84-e02f-450c-9213-396883c6cacc&shtk=TUFURVJJQUwgQ09OQ1JFVE8gUEFSQSBERVNBUlJPTExBUiBFTCBBUFJFTkRJWkFKRSBERSBQUk9QT1JDSU9OQUxJREFEIERJUkVDVEE%3D&shdk=TUFURVJJQUwgQ09OQ1JFVE8gUEFSQSBERVNBUlJPTExBUiBFTCBBUFJFTkRJWkFKRSBERSBQUk9QT1JDSU9OQUxJREFEIERJUkVDVEE%3D&shhk=Xsvo%2FYHvVn3xVx%2FL18kjUbd9PpmCu%2BVbaPsBoLU1lzE%3D&form=VDSHOT&shth=OSH.u91HRb1UZ8HlwA5qnUISOg
Realiza las actividades propuestas.
