Unit 1.1 to 1.2: Experimental design in evidence testing; transition to autopsy evidence and biomolecules.
Your PLTW coursework: Principles of Biomedical Science ▸ Unit 1: Medical Investigation ▸ Lesson 1.1 Investigating the Scene ▸ "Activity 1.1.4 Blood Evidence", "Activity 1.1.5 DNA Evidence", "Activity 1.1.6 DNA Analysis", "Activity 1.2.3 Forensic Toxicology"
What to do if absent- CER:
- Claim, Evidence, Reasoning: make a claim, back it with evidence, explain your reasoning.
- SOP:
- Standard Operating Procedure, the exact steps to follow (especially in a lab).
- Tracker:
- Your PLTW progress log where you record completed evidence.
- myPLTW:
- The PLTW course site where you do the online activities. Find it in Clever with your Microsoft sign-in, right next to Schoology.
Design a controlled test for a piece of evidence, then connect that thinking to evidence and the biomolecules a toxicology screen looks for in .
- 1Review your Unit 1.1 evidence log and pick one question that a lab test could answer.
- 2Write a testable and identify the , , and control.
- 3Predict your results and describe the you would use to record them.
- 4Read how a toxicology screen detects biomolecules in and list the groups involved.
- 5Connect and to the kinds of evidence an collects.
- 6Write a two-sentence claim-evidence-reasoning statement linking your test design to a possible conclusion.
- • You can write a testable with clearly named variables and a control.
- • You can describe a that fits your experiment.
- • You can name the major groups a toxicology screen examines.
Open any day for its full lesson, the work due that day, and guided notes.
CER stating which biomolecules are present in each unknown, using Wednesday's as evidence and citing comparison to positive and negative controls in the reasoning.
Written CER (3-5 sentences) arguing whether autopsies should require family consent, with a reference to either investigative truth or bodily autonomy in the reasoning.
Your worksheet: the side you argued, your three strongest arguments, the opposing point you had to answer, and where you actually stand now.
Exit ticket: name all four types, one identifying structural feature of each, and one organ that contains each type.
- Good evidence testing is just good experimental design, so today you turn a hunch into a fair test.
- Today's goal: design a controlled evidence test and learn why biomolecules in are the next layer of the case.
- Monday's bioethics debate ties in: should investigators be allowed to run every possible test on a sample, or only the ones the case needs?
- Your graded experimental design and mini-CER are submitted on the class site.
Do this: Bridge the PLTW PBS Unit 1.1 to 1.2 benchmark by designing a controlled evidence test and introducing and toxicology evidence in the online shell.
- • A fair test changes one and measures one against a control.
- • Biomolecules are the macromolecules (carbohydrates, lipids, proteins, nucleic acids) that toxicology screens detect.
- • and are separate determinations drawn from evidence.
- • Write a testable and identify its variables and control.
- • Plan a that matches an experiment's variables.
📋 PLTW evidence due Friday: completed Unit 1.1 to 1.2 experimental design with variables, , and a mini-CER.
All PLTW activities are completed inside the PLTW course environment: this page only gives direction.
Use this chart to keep your place. Nothing on it is turned in through the portal.
| Day | Work | Turn in |
|---|---|---|
| Monday · Mon, Sep 21 | Analyze tox results | CER stating which biomolecules are present in each unknown, using Wednesday's data table as evidence and citing comparison to positive and negative controls in the reasoning. |
| Tuesday · Tue, Sep 22 | Evidence for | |
| Wednesday · Wed, Sep 23 | Ethics of autopsy | Written CER (3-5 sentences) arguing whether autopsies should require family consent, with a reference to either investigative truth or bodily autonomy in the reasoning. |
| Thursday · Thu, Sep 24 | JCU bioethics 1: Should ELISA testing be mandatory? | Your worksheet: the side you argued, your three strongest arguments, the opposing point you had to answer, and where you actually stand now. |
| Friday · Fri, Sep 25 | Body systems and tissues | Exit ticket: name all four tissue types, one identifying structural feature of each, and one organ that contains each type. |
- First class day: bioethical debate (Monday is a closure)
- W: lab / data or model work
- Th: analysis / CER or design revision
- F: submit tracker + weekly evidence
Turn in: Unit 1.1 to 1.2: Experimental design in evidence testing; transition to autopsy evidence and biomolecules. weekly work due Trace/biometric data analysis plus mini-CER.
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
3 panels from the illustrated semester.
Fiction. There is no such student. The lessons, labs and dates are the real planned course; the student, the classmates and the conversations are invented.
Most days, this class is your PLTW coursework: and PLTW is online and individual. So being out usually just means doing exactly what we did in class, from home.
Open Clever, then myPLTWSign in to Clever with your district Microsoft account to open Schoology or myPLTW. Follow today's posted steps. If myPLTW will not open, use the posted alternative and tell Mr. Mendoza. Turn in your completed work through the Schoology assignment.
You can't do those from home: do this instead: Teacher-posted data/model packet, same objective. Supplemental: Khan: biomolecules; Khan: macromolecules.
Class still runs. A substitute will post today's plan: complete the online activity above; it's built to be self-guided. Need the concept taught without a teacher? Use this authoritative explainer:
Khan Academy: macromolecules
Hand-picked readings and interactives for this lesson, from authoritative open organizations and PLTW's own public course outline.