Octopus Factors – Count On 1,383 views January 11, 2016 Mark WeddellPrimes, Factors & Square numbers (5.00 / 5) 1 votes Loading... Get four counters up the legs of the Octopi by finding multiples of factor given. 2 player or against the computer . Y4 Open Activity Add to Bookmarks Other Suggested Activities Falling Numbers - Count OnOne or two player game. Answer questions (fraction as operator on quantity) and click on… 100 Square Spots100 Square Spots. Interactive 100 square used for examining number facts and series up to… Mallard Maths - Count OnFind the Square Numbers on the ducks.