The Ladder …

So we are learning about algebra in Maths and thinking algebraically (is there such a word as this????!) This week, Mary posed a problem for us to think about and work out mathematically …

How many sticks would it take to make a 5 rung ladder?

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If we know how many sticks it takes to make a 5 rung ladder, is there a way we can predict how many sticks we would need for a 13 rung ladder, or a 45 rung ladder??

There was some great team work going to solve this mathematical problem and indeed yes, there is an efficient way to calculate how many sticks you would for 13 or 45 rungs .. or in fact, as many rungs as you like.  Here are some photos of us in action:

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Can you work out the formula?

Collecting data …

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photo credit: Mykl Roventine via photopin cc
 

This week, we will be starting our next Maths unit all about Data.

Do you know what data is?

Or why we might collect it?

Or what data might be used for?

Or how it is collected?

Well, we will explore these questions and more this week. But firstly, one way we can collect data is by ‘crowd sourcing’ it – asking a question on our blog and inviting people to answer it.

So … what question do you think we should ask that would enable us to collect some useful data??