50 min
Student Lesson
Lesson 22: Flex Research: Researching Blood and Belonging
Content
Students will conduct short research to answer a self-selected question about a biology-of-connection topic and synthesize information from multiple sources.
Language
Students will use source-evaluation language, corroboration language, and evidence-linking phrases to explain how scientific evidence supports a synthesis claim about connection and belonging.
What is blood, and how does it work as a symbol of both family ties and our shared humanity?
Knowledge-Building:
Students use science research to deepen the unit’s study of blood as both a biological system and a symbol of family and identity.
Enduring Understanding:
Identity is shaped by biological, cultural, and emotional connections, and texts help us understand how these layers come together.
Future Lessons:
In Lesson 23, students will carry their source list and synthesis claim forward to refine their research thinking and connect it back to literary analysis.
Unit Performance Task:
This lesson strengthens students’ ability to connect evidence to meaning, a skill they will need for their literary analysis and original poem.
| Lesson Flow | Purpose of Learning Experience |
|---|---|
Launch5 Minutes | Activate prior knowledge about blood as science and symbol, and preview how research can deepen the unit’s essential question. |
Literacy Lab: Corroborating Sources into a Synthesis Claim10 Minutes | Teach students how to use source evaluation and corroboration to build a synthesis claim from multiple sources. |
Learning in Action30 Minutes | Part A: Evaluate and Gather (W.7.7, W.7.8) Students choose a biology-of-connection topic, read at least two science sources, and record relevant notes in the Research Notes organizer. Part B: Write a Synthesis Claim (W.7.9) Students corroborate across sources and draft a 2–3-sentence synthesis claim that links scientific evidence to human meaning. |
Material List
Student copies of the teacher-curated science source set on biology-of-connection topics
Unit 4, Lesson 22 Student Edition
Research Notes graphic organizer
Student journals
Routines
Turn-and-Talk
Partner Reading & Discussion
Quick Write
Teacher Guidance: Have students take out their recent notes from the unit’s knowledge-building work on blood and connection. Use this brief exchange to reactivate the essential question before students begin research.
Set students with nearby partners.
Say these Directions: In the previous lesson, we built ideas about how blood works in the body and how it can stand for family connection in Red, White, and Whole. Today, we are testing those ideas with science sources by researching one biology-of-connection topic and comparing what different sources say. This helps us answer the unit question about how blood can be both a real biological system and a symbol of belonging.
Ask: Which biology-of-connection topic feels most connected to our unit question right now, and why?
Blood typing feels connected to the unit question because it is real science about inheritance, but it also connects to the idea that blood can stand for family ties. If I understand how blood type is passed down, I can better explain why blood matters in both science and story.
Say these Directions: Take 20 seconds to think. Then you will have 40 seconds to discuss with a partner. Begin.
Connection to Today's Learning:
Now that students have reactivated the unit question, they are ready to learn how researchers compare sources and build a bigger idea from them.
Teacher Guidance: Throughout this two-lesson mini-research cycle, maintain blood typing as the teacher model topic. Display the section in “What is Blood?” that explains ABO inheritance and one teacher-curated science source that explains the limits of blood type as a measure of identity or another similar idea.
Say these Directions: Today, we are reactivating two research moves. First, we evaluate whether a source is useful for our question. Then we corroborate by comparing two sources and asking what idea they support together. Open your Research Notes organizer. On the research-question line, write: “How is blood type inherited, and what can it show about family connection?”
When I synthesize, I do more than collect facts. I first check whether each source is relevant and clear enough to help answer my question about blood typing. In the first model source, I notice the section explaining that ABO blood type is inherited from biological parents through genes. In the second model source, I notice a limit: Blood type shows one inherited trait, but it does not explain a whole person’s ancestry, culture, or identity. Since both sources help answer my question, I can corroborate them instead of treating them like separate facts. The bigger idea I hear across both sources is that blood type is a real biological connection, but it is only one part of what connects people. That bigger idea becomes the center of my synthesis claim.
Ask: What idea do these two model sources support together about blood typing?
These two sources both support the idea that blood type is inherited from biological parents, so it is a real form of biological connection. Together, they also show that blood type explains only one trait, not a person’s whole identity or belonging.
Check for Understanding (W.7.8) | |
|---|---|
In your Research Notes, write one sentence that explains what both model sources say together about blood typing.
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Modeling: | |
If students list facts from only one source, prompt: “Start with both sources show . . . Then add what the second source helps you understand better.” |
Connection to Today's Learning:
Students have now practiced the research move with a teacher model and are ready to apply it to their own topic.
Teacher Guidance: Students should choose one topic from the source set: blood typing, inherited traits, genetic ancestry, or the biology of family resemblance. They will work independently first and then pause for a brief partner exchange about which sources they are keeping and why.
Teacher Tip |
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Topics such as genetic ancestry, inheritance, and family resemblance can intersect with adoption, donor conception, stepfamilies, and other family structures. Keep the discussion grounded in how the sources explain scientific ideas, and never require students to connect the research to their own families. |
A strong research source does not just mention my topic. It directly helps answer my question with clear information I can understand and use. As I read, I ask: “Is this source really about my topic, or is it only related in a general way?” Then I ask: “Does it explain the science clearly enough for me to take notes from it?” Next, I compare it with another source to see whether an important idea is repeated, added to, or challenged. If a source is interesting but not useful for my question, I do not have to keep it. That choice is part of good research.
Say these Directions: Choose one biology-of-connection topic, and read at least two science sources about it. Use your Research Notes organizer to record your question, each source title, two key facts, and one note about why the source is useful for your research.
Research question: How is biology involved in family resemblance, and what can it show about belonging or connection? | |||
|---|---|---|---|
Source 1 | Fact: Children inherit one copy of each gene from each biological parent. | Fact: Many visible traits, such as hair color, follow predictable dominant/recessive patterns. | Usefulness: Helps explain inheritance in plain terms and examples |
Source 2 | Fact: Most “family resemblance” traits are influenced by many genes acting together, which is why children often look like both parents. | Fact: Biological siblings share about half of their DNA with each parent and with one another. | Usefulness: Explains how multiple genes combine to create the resemblance people notice within families |
Summary of findings: Both sources show inherited patterns can reveal a shared biological connection, but resemblance alone cannot fully define belonging, and family connection extends beyond what genetics can show. | |||
Ask: Which source seems most useful for your question so far, and what makes it useful?
Source 1 seems most useful for my question because it clearly explains how genes are passed from parents to children and gives examples of traits. It is relevant because it directly helps me answer how family resemblance works.
Check for Understanding (W.7.7, W.7.8) | |
|---|---|
In your Research Notes, list two sources for your topic and record one corroborated fact or idea that appears across them.
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Modeling: | |
If needed, direct students to compare one key detail from Source 1 and one from Source 2, then ask: “What bigger idea do these details support together?” |
Teacher Guidance: Students will use the notes they gathered in Part A to draft a 2–3-sentence synthesis claim. Their claim should explain what the science says and why that idea matters to the unit’s larger theme of connection, identity, or belonging.
A synthesis claim is not a list. It starts with a bigger idea and then shows how evidence from more than one source supports that idea. I want my first sentence to name the scientific concept clearly. Then I want my next sentence to show how at least two sources work together by agreeing with, adding to, or limiting each other. Finally, I can connect that science idea to a human meaning from this unit, like identity, family connection, or belonging. When I do that, my writing sounds less like notes and more like thinking. That is the bridge between science and story.
Display the following writing model if needed for support and guidance, noting what each sentence does (states a claim, corroborates, synthesizes):
Blood typing is one biological way family members can be connected because people inherit ABO genes from their biological parents. In “What is Blood?”, it says that blood type comes from genes passed down in families while my second source explains that this single trait cannot describe a person’s whole identity or ancestry. Together, these sources show that science can explain one kind of connection, but belonging includes more than one biological fact.
Say these Directions: Use at least two sources from your notes to draft a 2–3-sentence synthesis claim in your journal. Your claim should explain what the science says and why that idea matters to the unit theme of connection, identity, or belonging.
Ask: How do your sources together help you explain both the science and the human meaning of your topic?
My sources show that family resemblance happens because people inherit genes from biological relatives, but they also show that not every family member looks or acts the same way. Together, this helps me explain that biology can show one kind of connection, but belonging is bigger than one visible trait.
Say these Directions: After you draft, read your claim to a partner and revise one sentence based on feedback.
Pulse Check (W.7.8, W.7.9) |
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Which draft best synthesizes information from two sources about blood typing? A. Blood typing is inherited from parents. Blood is important.
B. Together, these sources show that blood typing reveals a biological connection, but it does not define a person's whole identity.
C. I picked the source with the chart instead of the one with the graph because it was easier to understand.
D. Families look alike because people are related.
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Say these Directions: Use your journal or Student Edition to answer both parts of the reflection. Refer to at least two specific details from your Research Notes or source list so your reflection shows what you actually learned today.
Ask: What new information did you learn as a result of today’s research, and what new question or next step do you have for Lesson 23?
Today I learned that genetic ancestry sources can show patterns in DNA, but they cannot tell a full story about culture or belonging. One source explained the limits of ancestry testing, and another source explained how inherited traits are passed through genes. My next step is to find one more source that helps me explain the difference between biological ancestry and lived identity so I can strengthen my synthesis claim.
Scoring Rubric
Criterion | 1—Developing | 2—Approaching | 3—Meets |
|---|---|---|---|
W.7.8—Citing relevant research details in reflection | Names learning in a vague way or includes no specific source-based details | Refers to one relevant detail from notes or sources but with limited or incomplete explanation | Refers to at least two relevant details from notes or sources and clearly explains new learning |
W.7.7/W.7.9—Identifying next steps from research findings | Gives a vague next step not connected to today’s research | Gives a next step connected to the topic but without clear explanation of why it is needed | Gives a specific next step connected to the topic and explains how it will strengthen future research or synthesis |
Say these Directions: Keep your source list and synthesis claim together because you will carry both into Lesson 23. This also helps with the unit Performance Task because strong literary analysis depends on turning evidence into a bigger idea. The same thinking move you used today will help you explain how symbols and images work in the novel.
Ask: Which research move helped you most today—evaluating a source, corroborating ideas, or drafting a synthesis claim—and why?
Drafting the synthesis claim helped me most because it forced me to connect facts instead of leaving them as separate notes. Once I wrote the bigger idea, I understood my topic better.
Say: The move we practiced today—combining evidence into a larger idea—will make future reading and writing stronger because it helps you explain not just what texts say but what they mean together.
Bring your Research Notes, source list, and synthesis claim to Lesson 23. Reread your two strongest sources and add one new note or one new question in your journal that you may want to use in the next lesson.
What can go wrong with blood? An overview of anemia, bleeding, blood clotting and blood cancers.
National Institutes of Health (NIH), adapted by Newsela

What Is Blood?
National Institutes of Health (NIH) and Centers for Disease Control (CDC), adapted by Newsela
