Lab Routines Check

Overview

Students will review essential laboratory routines, analyze safety scenarios, and demonstrate that they can follow a multistep procedure accurately. The lesson uses brief retrieval, partner discussion, and an individual check to establish readiness for future eighth-grade science investigations.

Learning intentions

Students will be able to:

• Explain why laboratory routines and safety procedures matter.
• Identify the correct response to common laboratory situations.
• Follow a short multistep laboratory procedure in the correct order.
• Demonstrate knowledge of lab routines with at least 80% accuracy.

Success criteria

• I can identify safe and unsafe laboratory behaviors.
• I can put the steps of a lab routine in the correct order.
• I can explain what to do during a spill, breakage, or other hazard.
• I can score at least 80% on the lab routines check.

Curriculum links

• Following precise multistep procedures when carrying out experiments and technical tasks.
• Analyzing an author’s purpose when a science text explains a procedure or safety expectation.
• Writing informative explanations of scientific procedures and routines.
• Reading and comprehending grade 6–8 science and technical texts.

Lesson structure (20 minutes)

1. 0–3 min · Hook and retrieval. Teacher displays a photo idea of a cluttered lab bench beside a safe, organized bench using the opening comparison slide and asks, “What could go wrong, and which routines prevent it?” Students silently list two safe choices, then share one with a partner.

2. 3–7 min · Direct instruction. Teacher uses the lab routines teaching slides to review four core routines: wear required personal protective equipment, follow written directions in order, report accidents immediately, and clean and check the workspace before leaving. Students annotate these routines on the lab routines practice sheet and identify the purpose of each routine.

3. 7–12 min · Scenario analysis. Teacher places students in seven pairs and gives each pair one or more lab safety scenario cards. Teacher directs pairs to read the scenario, identify the hazard, and agree on the safest response. Students discuss the situation, prepare a one-sentence explanation, and share selected responses with the class. Teacher emphasizes that students should alert the teacher rather than attempt to handle spills, broken glass, or unknown substances independently.

4. 12–16 min · Procedure sequencing. Teacher displays the procedure sequencing slide and models how to read a procedure for action verbs, quantities, equipment, and order. Students independently number four mixed-up steps on the lab routines practice sheet, then compare answers with a partner and explain which words helped them determine the sequence.

5. 16–19 min · Individual mastery check. Teacher distributes the final section of the lab routines practice sheet and reminds students to work independently. Students answer five items: three multiple-choice safety questions, one sequencing question, and one short response explaining why a selected routine is important. The 80% target is four out of five correct.

6. 19–20 min · Plenary and next step. Teacher uses the closing reflection slide to ask, “What is one routine you will use automatically in our next lab?” Students state one routine and hand in their completed worksheet. Teacher records students needing a brief reteach before the next practical.

Resources

• lab routines and procedures slide deck
• lab routines practice sheet
• lab safety scenario cards
• Projector or interactive display
• Pencils
• Science notebooks
• Classroom laboratory safety equipment for reference, such as goggles and gloves
• Teacher answer key and class roster for recording results

Assessment

• Listen during partner scenario discussions for accurate identification of hazards and appropriate reporting procedures.
• Check the procedure-sequencing task for correct use of order, action verbs, and safety details.
• Score the five-item individual check. Students meeting at least 80% demonstrate the stated mastery goal; students below 80% receive targeted review before participating in a practical investigation.

Differentiation

• Provide a dyslexia-friendly worksheet with a clear sans-serif font, generous spacing, short lines of text, numbered steps, and bold action verbs. Allow students to hear directions read aloud or use text-to-speech.
• Support multilingual learners and students who need language assistance with a visual word bank containing routine, hazard, equipment, report, clean, and procedure. Offer the sentence frame: “The safest response is ___ because ___.”
• Pair students strategically during scenario analysis, and allow students to point to or sketch the correct response before explaining it verbally.
• For students who need additional support, reread one scenario at a time and provide two possible responses to evaluate. Do not reduce the safety expectation.
• Advanced learners can rewrite one unsafe scenario as a precise three-step procedure, including an action, a safety reason, and a final cleanup or reporting step.

Extension

• Ask advanced learners to design a short “before, during, and after” routine for a future investigation and explain how each step reduces risk.
• Have them identify one vague instruction, such as “handle carefully,” and revise it into a measurable, precise direction.