Have students write down the actual amount of water next to their predictions. Follow procedure with each sprinkler head. Review the collection of data and have the students compare the data to their predictions. Discuss the advantages and disadvantages of xeriscaping. Provide closure through discussing summary questions.
Some sprinkler heads have a higher flow rate than others.
Use the students' data. Answers will vary, use students' data. Answers will vary, use students' data. Have the students look at features of the sprinkler heads and analyze how effectively they do the job of watering a lawn. Answers will vary.