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OpenSciEd Unit 7.3 · Lesson 08 · 8.B

Part 3 Argue

MS-LS1-5MS-LS1-7Assessment · Formative assessment

Assessment guide

How to read student work on this assessment — standards alignment, what strong understanding looks like, and common gaps.

Learning progression

Target understanding

8.B Engage in an argument from evidence supported by scientific reasoning for how a healthy digestive system rearranges matter through chemical reactions and absorbs food, and how and why M’Kenna’s digestive system is functioning differently.

Standards alignment

MS-LS1-5MS-LS1-78.B

8.B Engage in an argument from evidence supported by scientific reasoning for how a healthy digestive system rearranges matter through chemical reactions and absorbs food, and how and why M’Kenna’s digestive system is functioning differently.

What understanding looks like

Strong

  • See detailed sample responses and scoring guidance in Part 3: Sample Student Response of What’s Causing M’Kenna’s Symptoms and Argument Rubric - Part 3 - M’Kenna’s Disease.

Facilitation guidance from the lesson plan — what to notice in student thinking and how to respond while teaching.

Building towards

8.B Engage in an argument from evidence supported by scientific reasoning for how a healthy digestive system rearranges matter through chemical reactions and absorbs food, and how and why M’Kenna’s digestive system is functioning differently.

What to look / listen for

See detailed sample responses and scoring guidance in Part 3: Sample Student Response of What’s Causing M’Kenna’s Symptoms and Argument Rubric - Part 3 - M’Kenna’s Disease.

What to do

While the assessment should be completed independently, some students might benefit from assistance with the organization of their writing. Additional guidance about supporting students’ writing is provided below.

WRITING IN SCIENCE

To support writing in science, some students may benefit from assistance as they prepare to organize their argument in writing. For those students who struggle with written organization, provide them with a structure built around sentence stems so that they can craft an argument that demonstrates their content knowledge without getting tripped up by organizational challenges.

You may provide something like:

M’Kenna’s symptoms are being caused by ______.

One piece of evidence I collected that supports this is ______. This supports my conclusion because…

Another piece of evidence I collected that supports this is _____. This supports my conclusion because…

I know that M’Kenna does not have _____ because...

Identify similarities and differences between arguments. Put students into groups of 3. Ask students to compare and critique their peers’ arguments based on how well their evidence supports their explanation of which diagnosis fits M’Kenna’s symptoms. Use Peer Feedback Guidelines to support students in giving and receiving feedback. You can choose to have students revise their arguments based on peer critique.

Additionally, students can complete the rubric Lesson 8 Self-Assessment: Giving and Receiving Feedback to reflect upon the feedback they give to and receive from peers.

Materials

Last updated from official OpenSciEd on 7/1/2026

Student handout

7.3 Lesson 8 Assessment Part 3 Argue.docx

Google Form

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Teacher guide

7.3 Lesson 8 Teacher Edition.docx

Answer key (recommended)

7.3 Lesson 8 Answer Key Connecting the Structure.docx

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Part 3 Argue | Eddo Learning Platform