Investigatory Report

By: Karli Anne Lao-21 Rhyll Joy Balinas-17 Rechelle Allison Lee-22

What type of eggshell can make the best fertilizer?

Problem

What type of eggshell can make the best fertilizer?

Hypothesis

We think that if we use century eggshell, It will make the best

fertilizer among the other eggshells.

Experimental Design

• MANIPULATED VARIABLE- type of eggshell

• RESPONDING VARIABLE- the growth of the plant, the

height of the plant

Materials

• 5 pots with the same amount of a particular soil and with plants of the same kind

• 4 kinds of eggshells• Water

Procedure

1. Pound the 4 kinds of eggshell.2. Place each kind of eggshell on a pot.3. One pot contains no pounded eggshell.4. Water them everyday.5. After a few days, measure the height of each

plant.6. The tallest one is placed on the pot with the

best fertilizer.