Safety & Introduction

Safety

Students will understand that…

1. Clothing and Hair— Loose or baggy clothing, dangling jewelry, and long hair are safety hazards in the laboratory.

2. Cold and Heat Protection— Cold or hot materials should only be touched with hands protected by items such as safety tongs, safety mittens, or rubber gloves. In some instances, only the teacher should handle materials at extreme temperatures (e.g., dry ice).

3. Food— No eating, drinking, or use of cosmetics should occur during lab time. Even familiar substances used in activities (e.g., marshmallows for molecules) should not be consumed, as they may be contaminated in the lab setting.

4. Glass Caution— Glass should be used cautiously, and students should report any chipped, cracked, or scratched glassware should such occur during a lab activity.

5. Housekeeping— Work areas should be kept clean at all times, with backpacks, books, purses, and jackets placed away from lab tables.

6. Washup—Hands should be washed with soap and water before and after laboratory work. Students should not touch their faces or hair with either bare or gloved hands that have handled lab materials.

Introduction to Science

Observation

Inference

Claim

Evidence

Reasoning

Independent Variable

Dependent Variable

Constant

Control Group

Experimental Group