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Take some numbered cards; between ten and twenty should be enough
(you could use a suit from a pack of playing cards).
Shuffle the cards.
Then organise your deck of cards into numerical order.
What method did you use to put them in numerical order?
Can you think of any other ways you could have sorted them?
Here are some different sorting algorithms you could try. You may find it easiest to lay the cards out in a line to keep track of their order and see what's happening at a glance.
Bubble Sort
Shuttle Sort
Selection Sort
Insertion Sort
Quick Sort
Try each algorithm a few times, and keep a record of how many 'moves' or 'swaps' you do. You could work with a friend and 'race' against each other to see who sorts their pack the quickest.
If you are struggling to make sense of the written algorithms, here are some videos showing each algorithm being performed.
Here are some questions to consider: