Osmosis Claim Evidence Reasoning

Grade 8Science45 min

aligned to Students Will Use Data To Write A Claim With Evidence

Learning Objective

I can construct a claim about osmosis and support it with evidence from data.

Lesson Flow

Watch Video

8 min

CER (Claim, Evidence, Reasoning) in Biology

Amoeba Sisters

Practice

14 min

3 questions β€’ Short answer

Exit Ticket

5 min

β€œPotato slices were placed in two different salt solutions, A and B. After 30 minutes, the potato slices in solution A gained mass, while the potato slices in solution B lost mass. State a claim about the direction of water movement in each solution and identify the evidence that supports your claim. A scientist measures the initial and final volumes of cells placed in a sugar solution. The data shows that the cells' volume increased by 15%. Formulate a claim about the concentration of the sugar solution relative to the cells and identify the evidence that supports your claim. ”

Teacher Guide

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  • Answer keys for all questions
  • Differentiation strategies
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