Title: Demonstrating Safe Practices during Laboratory and Field Investigations

Grade Level: High School (9-12)

Subject: Science

Duration: 2 class periods (90 minutes each)

Objective: Students will demonstrate safe practices during laboratory and field investigations as outlined in Texas Education Agency-approved safety standards.

Materials: - Texas Education Agency-approved safety standards - Laboratory safety equipment (goggles, gloves, lab coats, etc.) - Field investigation safety equipment (appropriate clothing, sunscreen, insect repellent, etc.) - Laboratory and field investigation scenarios - Safety checklist - Whiteboard or chalkboard - Projector or computer for multimedia presentation

Procedure:

Day 1:

Introduction (10 minutes): 1. Begin the lesson by discussing the importance of safety in laboratory and field investigations. 2. Explain that the Texas Education Agency has established safety standards to ensure the well-being of students during scientific activities. 3. Share the objectives of the lesson with the students.

Safety Standards Presentation (20 minutes): 1. Display the Texas Education Agency-approved safety standards on the whiteboard or projector. 2. Go through each standard, explaining its significance and how it applies to laboratory and field investigations. 3. Encourage students to take notes and ask questions for clarification.

Safety Equipment Demonstration (30 minutes): 1. Introduce various laboratory safety equipment (goggles, gloves, lab coats, etc.) and field investigation safety equipment (appropriate clothing, sunscreen, insect repellent, etc.). 2. Explain the purpose of each item and demonstrate how to use them correctly. 3. Allow students to practice wearing and using the safety equipment.

Laboratory Safety Scenarios (30 minutes): 1. Divide the class into small groups. 2. Provide each group with a laboratory safety scenario. 3. Instruct the groups to discuss and identify the potential hazards in the scenario, as well as the appropriate safety measures to be taken. 4. After discussion, have each group present their findings to the class. 5. Facilitate a class discussion to reinforce the importance of safety practices.

Day 2:

Field Investigation Safety Scenarios (30 minutes): 1. Distribute field investigation safety scenarios to each group. 2. Instruct the groups to analyze the scenarios and identify potential hazards and safety measures specific to field investigations. 3. Allow time for group discussions and preparation. 4. Have each group present their findings to the class. 5. Facilitate a class discussion to reinforce the importance of safety practices in field investigations.

Safety Checklist Activity (30 minutes): 1. Provide each student with a safety checklist. 2. Instruct students to review the checklist and identify any missing safety measures or equipment. 3. Encourage students to suggest additional safety measures based on their knowledge and experience. 4. Discuss the checklist as a class, ensuring that all safety measures are covered.

Conclusion (10 minutes): 1. Recap the importance of following safety standards during laboratory and field investigations. 2. Emphasize the responsibility of each student to prioritize safety in scientific activities. 3. Allow time for any remaining questions or concerns.

Assessment: - Participation in group discussions and presentations - Completion of safety checklist activity - Teacher observation of students’ adherence to safety practices during laboratory and field investigations