We are all hard at work investigating which type of paper absorbs the most water. Make sure that all of the paper is cut to the same size (A3).
Get ready with the stop-clock. The card is soaked for 30 seconds.
Left:
After 30 seconds the water absorbed in the different types of paper is wrung into the dry blue bowl. The water from the blue bowl is then carefully poured into the measuring jars. Be careful not to spill any!!

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