Read a Seedling Observation Log

5 questions0m 0s

Learn the skill

Find the date and unit before comparing measurements. Subtract the earlier height from the later height to find growth. A measurement tells what happened, but may not tell why.

Worked example

If a seedling is 4 cm tall on Monday and 7 cm tall on Friday, its recorded growth is 7 - 4 = 3 cm. That alone does not explain what caused the growth.

Three repeated measurements at ten, eleven, and twelve seconds sit on a common number line. The mean is eleven seconds and the observed range spans ten to twelve. — Repeated results show variability; the mean summarizes them but is not a guarantee for the next trial.

One Seedling, Five Days

A class measures the same seedling from the soil surface to its tip at the same time each day. Monday: 4 cm. Tuesday: 5 cm. Wednesday: 5 cm. Thursday: 7 cm. Friday: 9 cm. These are fictional practice measurements. The class records what it sees without claiming that the log alone explains the growth.

Question 1 How tall was the seedling on Tuesday, in cm? Answer

Question 2 How much taller was it on Friday than on Monday, in cm? Answer

Question 3 Between which two listed days did the recorded height stay the same? Monday and Tuesday Tuesday and Wednesday Thursday and Friday

Question 4 Which sentence is an observation from the log? The seedling measured 7 cm on Thursday The seedling liked Thursday best Music caused the seedling to grow

Question 5 What should you do before comparing another seedling's height with these entries? Use a different unit without converting Guess its height from a distant photo Measure it in centimeters using the same method