KH-SCI-IIS9 · Weeks 2–3 · Unit 01

Scientific Inquiry, Measurement & Evidence

Learn to ask answerable questions, define and control variables, collect reliable measurements, represent data honestly, evaluate uncertainty, and build explanations whose strength matches the evidence.

2Weeks

10Lessons

3Inquiry Applications

17Mastery Requirements

Start learning

Begin Day 1

Investigations & labs

Investigation Dataset Lab Design Task

Assessment & records

Mastery Quiz Unit Assessment Student Record

Mastery record

Unit 01 in progress

0 of 17 requirements0%

Day 1Not complete

Day 2Not complete

Day 3Not complete

Day 4Not complete

Day 5Not complete

Day 6Not complete

Day 7Not complete

Day 8Not complete

Day 9Not complete

Day 10Not complete

Helicopter InvestigationNot complete

Dataset LaboratoryNot complete

Mastery Quiz · 12/15Not complete

Design Task · 32/40Not complete

Objective Assessment · 20/24Not complete

Human Verification · CRs ≥16/20Not complete

Final ReflectionNot complete

Mastery gate: Unit 01 is not complete until all 17 requirements are satisfied. Objective thresholds are Quiz ≥12/15 and Assessment ≥20/24. Human-scored evidence requires Design Task ≥32/40 and both constructed responses ≥16/20, followed by reviewer verification. Completion alone does not substitute for mastery.

Two-week sequence

Design before collecting; evaluate before concluding

Every lesson creates usable evidence for later laboratory work and the course portfolio.

Week 1 · Questions, variables, design, and measurement

From Phenomena to Questions

Turn observations into focused, measurable, investigable questions.

Open lesson →02

Variables & Operational Definitions

Define exactly what changes, what is measured, and how it is measured.

Open lesson →03

Fair Tests, Controls & Sampling

Reduce alternative explanations through controls, comparison, replication, and sampling.

Open lesson →04

Measurement Quality

Distinguish accuracy, precision, resolution, uncertainty, error, and honest recording.

Open lesson →05

Plan the Paper Helicopter

Write a safe, repeatable investigation plan before collecting data.

Open lesson →

Week 2 · Data, evidence, explanation, and evaluation

Conduct & Analyze

Carry out repeated trials, calculate means and ranges, and document anomalies.

Open lesson →07

Tables, Graphs & Scale

Choose useful displays and recognize misleading or incomplete graph choices.

Open lesson →08

Patterns, Uncertainty & Causation

Match conclusions to evidence and distinguish association from cause.

Open lesson →09

Claim, Evidence, Reasoning & Sources

Build scientific explanations and evaluate source transparency.

Open lesson →10

Design Challenge & Mastery

Complete the design performance task, review, assess, correct, and reflect.

Open lesson →

Investigations and assessment

Apply the complete inquiry cycle

Paper Helicopter Investigation

Test how one design variable affects fall time using repeated trials, a written safety scan, raw data, mean, range, graph, and evaluation.

Open Investigation

Dataset Laboratory

Analyze a fictional urban shade and surface-temperature dataset, identify association and uncertainty, and avoid an unsupported causal claim.

Open Dataset Lab

Investigation Design Task

Design a fair absorbency investigation. Human-scored mastery requires at least 32/40.

Open Design Task

Mastery Quiz

Fifteen objective questions. At least 12/15 is required, with corrections and retakes available.

Open Quiz

Unit Assessment

Twenty-four objective questions plus two human-scored constructed responses. Objective mastery requires 20/24; each constructed response requires 16/20.

Open Assessment

Student Record & Verification

Record rubric scores, reviewer verification, final reflection, and exportable mastery evidence. Unit 02 remains locked until Unit 01 mastery is verified.

Open Record