Required Materials
Gr 8 Water systems: blank paper, ability to print, blank unlabelled map of world (printed off internet), ice cubes, some of the following: fan, water, lamp, sand, plastic clear containers (recycling works - like old water bottles, need to be able to make small holes in them so good to have nails and hammer), sand, gravel, cups, some of the following: twigs, leaves, seeds, ketchup, soy sauce, mustard (other kitchen sauces) - to create dirty water, some of the following: funnels, fabric, cardboard, sand, gravel, yard, wire, coffee filters, etc. - pH strips, conductivity meter (optional), salt, Chlorine test strips, water types (tap, rain, bottled, filtered, stream, etc)