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...objects float or sink at all. This relates to the object’s density. Density is a concept that sometimes confuses people, but it is simply the amount (mass) of something that is contained within a certain volume of space. For example, if you have one person in an elevator, it is not densely packed, but if you try and squeeze ten people in, things are going to get a bit tight. In this case the number of people is the ......

...concepts start to look more complicated. Remember this when completing the next activity with another number trick...Week 4: Working with patterns and formulas: 2.2 Another number trick - Here is another number trick which uses the same techniques you learned in the last section to see how it works. Activity 6 Another number trick Timing: Activity 6 Another number trick...