Description: Central Idea Explain how relevant details support the central idea, implied or explicit.
Maps to Reading Plus skills: 2B


2B: Analyzing Relative Importance

2B: Analyzing Relative Importance

Description: Determining Relative Importance

✓ standard met

Selection: HiD-6


Grade level: 4
Word count: 1477 words
Author: Dustin Rowland
Synopsis: Why would an ancient culture carve huge drawings into the face of the land? And what do they mean?
Excerpt: The Nazca lines are not just simple straight lines. They include many different shapes and patterns. There are hundreds of triangles, spirals, and other figures that cross the valley floor. Even more interesting are the dozens of animal and plant drawings that lay beside them. These land pictures include a monkey, a whale, a spider, a lizard, several birds, and many other living things that they considered to be important at the time. In total, about 900 different designs have been discovered.

Some of the designs are incredible simply for their size. Some of them are massive! They cover an area of more than 200 square miles. One of the largest drawings stretches more than 660 feet across the desert sand. That is the length of two football fields. And some of the straight lines are even longer. One goes on for nine miles!

Question: Reread these two excerpts. The Nazca lines are amazing examples of human skill and effort for which two main reasons?
  1. their interesting shapes and patterns
  2. their huge sizes
  3. their bright colors
  4. their thoughtful words and sayings
  5. their unusual sounds

✓ standard met

Writing prompt: Describe two important details that support the main idea of a selection and two other details that are not important to the main idea.


Organization: Certica Solutions