Each group needs:

• computer or laptop with access to Microsoft Excel
• plants, 3 cm (1.2 in) or taller, and nearly identical)—Note: Golden Pothos (Epipremnum aureum) are easy to grow and relatively low maintenance. Other common indoor plants for this activity include the prayer plant (Maranta leuconeura), cast iron plant (Aspidistra elatior), peace lily (Spathiphyllum), and heartleaf philodendron (Philodendron hederaceum).
• plastic pot or jar for soil cultivation (The size of the pot or jar will not matter in this activity because of the change of weight of plants and daily growth rate.)
• 1 L (~32 oz) yogurt plastic container with a lid (to support hydroponic plants)
• hand trowel
• scissors

For the entire class to share:

• high-resolution digital scale
• 23 L ~(25 qt) bag of potting soil, or 47 L [50 qt] if class is bigger, nutrients for hydroponics—available online
• set of measuring spoons
• set of measuring cups
• container or bucket for the nutrient solution (optional)