Teacher Launch · Grades 9–12

Lab Report Lockdown

Scientific reasoning · Grades 9–12

Premise: A company's self-funded "miracle drink" study claims it makes students smarter. Students audit it for peer review — catching the tiny sample, the missing control group, the correlation-causation leap, and the conflict of interest.

Students open the clue board, examine the evidence, and solve four locks (a sample-size lock, a control-group lock, a reasoning-flaw word lock, and an evidence-strength order lock). Each lock reveals a short reasoning explanation when solved. The answer key is not shown on this page.

▶ Open Student Breakout

Student activity: grade912/student.html · ~10–15 minutes · works on tablets, laptops, and interactive whiteboards.

Skills & TEKS alignment

Builds scientific skepticism and argument-evaluation skills across science and ELAR standards:

Science process: identifying controls, variables, sample size, and bias in experimental design.
Distinguishing correlation from causation and recognizing confounding variables.
ELA 9–12.8/9 analyze and evaluate the validity and reliability of an argument and its evidence.
Evaluating conflicts of interest and ranking strength of evidence (ad vs. single study vs. independent replication).

💡 Teacher tip: Extend it: have students redesign FizzCo's study properly — adding a control group, a larger sample, and independent reviewers — then explain what each fix protects against.