In this lesson, students will learn about the specific needs of plants, design a rainwater irrigation system and test the effectiveness of the system. A standard plot of garden plants will be exposed to the rain water delivery systems designed by students. Students will then measure the growth of their plants irrigated by different systems. Objectives: Use scientific techniques to determine the effectiveness of rain delivery systems by measuring plant growth. Apply measurement techniques, evaluate data, make comparisons and report on the implications based on their results. Time: Introduction: 30 minutes Activity 1: 60 minutes Activity 2: 120 minutes Activity 3: 30 minutes Activity 4: Depends on if in-class or at-home assignment