Olá!

Conforme prometido, segue alguns sites com sugestoes de atividades diferenciadas.

http://nrich.maths.org/5448

http://www.recreomath.qc.ca/

http://illuminations.nctm.org/WebResourceList.aspx?Ref=2&Std=0&Grd=0

http://therese.eveilleau.pagesperso-orange.fr/