Design Challenge & Mastery

Learning objectives

• Transfer Unit 01 inquiry principles to a new investigation without copying the helicopter design.
• Define variables, measurements, controls, repetitions, safety boundaries, data structure, analysis, and limitations before collecting evidence.
• Defend graph, source, and CER choices using the reasoning developed across Days 01–09.
• Complete objective and constructed-response mastery evidence independently.
• Use error analysis and corrections to repair misconceptions rather than merely repeat answers.
• Reflect on growth in question design, measurement, data integrity, uncertainty, causal reasoning, and scientific communication.

Materials

• Investigation Design Task
• Science notebook and Unit 01 portfolio
• Khaemenes Scientific Calculator when calculation verification is permitted
• Dataset Lab, Evidence Citation Studio, and PROSE only where the task explicitly permits them
• Mastery Quiz and Unit Assessment
• Student Record / Reflection

1. Unit 01 inquiry map

Before beginning the transfer task, reconstruct the scientific workflow from memory:

1. Phenomenon → investigable question
2. Variables → operational definitions
3. Fair comparison → controls, sampling/repetition, confounders
4. Measurement → instrument fitness, resolution, variation, bias
5. Preregistered design → protocol, table, prediction, safety
6. Data collection → raw-data integrity and deviations
7. Analysis → summaries, anomalies, graphing
8. Inference → uncertainty, association, causation, alternatives
9. Communication → CER, sources, revision

2. Independent investigation design challenge

Design a fair test of how paper type affects the mass of water absorbed by a fixed-size sheet. The scientific product today is the design and defense. Do not collect data unless the linked task explicitly instructs you to do so and the safety conditions are satisfied.

Your design must include:

• a precise investigable question;
• an operational definition of “water absorbed” using measurable quantities;
• independent/dependent variables and controlled factors;
• paper-condition selection and repeated-trial plan;
• a measurement method, instrument resolution, and likely uncertainty/bias;
• a reproducible procedure and raw-data table created before results;
• safety/stop conditions and spill management;
• a graph choice with axes and units;
• a prediction stated separately from evidence;
• at least two plausible limitations or confounders;
• a plan for what would count as evidence supporting, weakening, or failing to distinguish the prediction.

3. Design-defense gate

Before considering the task complete, challenge the design with these questions:

4. ProTools: use by purpose, not by habit

Unit 01 has introduced several tools. Today you must decide whether each tool is appropriate rather than automatically using everything available.

5. Mastery Gate A — 15-question quiz

1. Complete the mastery quiz under its stated assessment conditions.
2. Submit before opening explanations or correction resources.
3. Score 12/15 or higher (80%).
4. If below 80%, do not simply memorize answer positions. Identify the concept behind each miss, return to the relevant lesson/evidence, write a correction explanation, then attempt a fresh retake when available.

6. Mastery Gate B — objective unit assessment

After the quiz gate and required corrections, complete the 24-question objective assessment under its stated conditions.

• Mastery threshold: 20/24 or higher (at least 80%; 19/24 is below the course gate).
• Assessment completion alone is not mastery.
• A below-gate score triggers targeted review and reassessment rather than progression by participation.

7. Constructed-response evidence

Complete both constructed responses using the published rubric. These responses should demonstrate reasoning that multiple-choice items cannot fully capture: experimental design, evidence evaluation, uncertainty, and scientific communication.

8. Mentor conference — after independent evidence

Use the Science Mentor after completing the required independent mastery evidence, or at the point explicitly permitted by the assessment instructions. Bring your correction record and design task—not hidden answer keys.

Be prepared to discuss:

• Which misconception survived longest during Unit 01?
• What evidence changed your thinking?
• Which design decision in the paper-absorbency task is hardest to defend?
• Where did you appropriately limit a claim?
• What would you change before running an independent replication?

Mentor support is for explanation, correction, and reflection. It does not convert assisted work into independent assessment evidence.

9. Mastery status and progression

10. Final scientific reflection

Complete the Student Record and respond with specific evidence from your work:

1. How did your approach to scientific questions change?
2. What do you now check before trusting a measurement?
3. How do you decide whether an unusual data point should remain?
4. What graphing choice are you now more cautious about?
5. How has your causal language changed?
6. How do you distinguish a strong source from a persuasive-looking source?
7. What is one scientific habit you will carry into Unit 02?

11. Unit 01 portfolio checklist

• Day 01 investigable question/evidence-sufficiency work
• Day 02 variable map and operational definitions
• Day 03 fair-test/sampling design repair
• Day 04 measurement audit
• Day 05 preregistered helicopter plan
• Day 06 raw data, deviations, summaries, and analysis
• Day 07 final graph and graph-integrity audit
• Day 08 uncertainty/confounder/causal reasoning
• Day 09 CER, source audit, and revision evidence
• Day 10 independent design challenge, mastery corrections, constructed responses, and reflection