In a simple water filtration activity, it is the use of a variety of water-filtration materials. Come together to build the best water filtration. There are many types of water that can be used by the child, such as water, wastewater, household water, etc., what has been learned from making this water machine a layer of material that brings a lot of water, which we know to sort the resolution from the highest resolution to the bottom and the least resolution is on top. It will make the water from the best filtration.
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