Lesson 8: Cluster 3: Ways to Know You Lesson 4 - Main Idea

How can you determine a main idea and provide support with text evidence.

Who am I?
What makes us unique?

Find
Idea
No one
Pattern
Scientist
Similar
Special
Study

9.12.3 speak and write about
grade-appropriate
complex literary and
informational texts and
topics

Reading for comprehension
Writing for comprehension
Understanding and applying vocabulary

DOK 3

Draw conclusions

Biometric Technology: Connect the text to everyday technology students use globally, such as unlocking smartphones with fingerprint scanners (Touch ID) or facial/iris recognition (Face ID).
Forensics and Media: Connect to popular culture, international crime dramas, or news stories where DNA and fingerprinting are used to solve mysteries or identify individuals.
Passports and Immigration: Many high school ESOL students have direct experience with international travel or immigration processes that require digital fingerprinting and biometric photographs.

Identical Twins/Triplets: Students might think identical multiples share the exact same physical traits, missing the text's point that triplets still have different fingerprints and DNA.
The Concept of "Pattern": In everyday language, a pattern often means a predictable, repeating design (like on clothing). Students might confuse this with the biological, unique irregularities found in irises or fingerprints.
Binary Language vs. Scale: The text jumps from fingerprints (unique in 10 ways) to irises (200 ways) to DNA (1 trillion ways). Students might conflate "unique" with "simple" and fail to grasp the exponential scale of biological complexity.
Literal vs. Figurative "Inside Us": The description of DNA being "in your hair" might lead students to think it is only in the visible strand, rather than at the cellular level/root.

Sentence starters
Visual aids
Small group instruction

Exit Ticket

Slides

Activity