Keeping Damp in a Drought - Maker Challenge

Materials List: Keeping Damp in a Drought

different types of soil or mulch (three to four varieties are ideal)
different types of pots (8 to 10 cm in diameter) made of plastic and clay (two varieties are ideal)
assortment of materials to place around and on the soil, such as plastic or aluminum foil
beaker or graduated cylinder
water
cup or trowel (for scooping soil)
moisture meter, examples available online
lab notebooks and pens
poster paper and markers
mint plants (optional: see Wrap Up below)