decimals [connecting pictures in a grid]

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Drag 15 of the 16 pictures from the pile and drop them into the grid. Do not bother about any order at this stage. You are trying to the find connection between 4 sets of 4 pictures. You can rearrange the order of the pictures at any time. *Take care however !!! when you drag in your last picture the grid becomes FROZEN. To restart the activity just refresh the page.