4TH & 6TH LEVEL

With these two websites you can practise the topics of the books...you can find games, the stories, etc

 https://elt.oup.com/student/coolkids/coolkids4/?cc=global&selLanguage=en
 (4th level)
https://elt.oup.com/student/coolkids/coolkids6/?cc=global&selLanguage=en  (6th level)