TO MEASURE THE GROWTH OF A PLANT.
Small plots/boxes, meter rule and seeds of beans (or green grams, peas, maize),
Place some soil in the box or prepare a small plot outside the laboratory.
Plant some seeds in the box and place it in a suitable place outside the laboratory (or plant the seeds in your plot).
Water the seeds daily.
Observe the box/plot daily and note the day the seedlings emerge out of the soil.