Elf Trap STEM Project

PA STEELS Standards (Grades 6–8)

🧪 Scientific & Engineering Practices (SEPs)

These apply across all STEELS performance expectations for grades 6–8.

SEP1 – Asking Questions & Defining Problems

• Students define the challenge: design a trap that can safely capture an “elf.”
• Identify criteria (effectiveness, stability, creativity) and constraints (materials, time).

SEP2 – Developing & Using Models

• Students sketch trap designs.
• Build prototypes to test mechanisms (doors, triggers, ramps, levers).

SEP3 – Planning & Carrying Out Investigations

• Test trap mechanisms under controlled conditions.
• Adjust variables such as weight, angle, friction, or trigger sensitivity.

SEP4 – Analyzing & Interpreting Data

• Observe which designs work consistently.
• Compare success rates and failure modes.

SEP5 – Using Mathematics & Computational Thinking

• Apply measurement, geometry, and ratios to improve design accuracy.
• Calculate distances, angles, or force needed to trigger mechanisms.

SEP6 – Constructing Explanations & Designing Solutions

• Explain why certain trap designs work better.
• Use evidence to justify design choices.

SEP7 – Engaging in Argument from Evidence

• Debate which trap design best meets the criteria.
• Use data from testing to support claims.

SEP8 – Obtaining, Evaluating & Communicating Information

• Communicate design process, results, and improvements to peers.

🔧 Engineering & Technology Core Ideas (ETS)

ETS1.A – Defining & Delimiting Engineering Problems

• Identify the problem and constraints.
• Establish criteria for a successful trap.

ETS1.B – Developing Possible Solutions

• Brainstorm multiple trap mechanisms.
• Build and test prototypes.

ETS1.C – Optimizing the Design Solution

• Analyze test results.
• Redesign to improve reliability, strength, or trigger sensitivity.

⚙️ Physical Science Core Ideas (PS)

PS2.A – Forces & Motion

• Explore how gravity, friction, and applied force affect trap mechanisms.
• Understand how motion is initiated (trigger release, falling objects, levers).

PS2.B – Types of Interactions

• Investigate contact forces (pushes, pulls) in trap mechanisms.
• Explore friction in ramps, slides, or moving parts.

PS1.A – Structure & Properties of Matter

• Consider material strength, flexibility, and stability when building.

🌎 Earth & Human Systems (ESS)

ESS3.C – Human Mitigation of Natural Hazards

• Relate trap design to real engineering challenges (e.g., safety mechanisms, structural stability).

📐 Math Connections (Grades 6–8)

Geometry & Measurement

• Measure lengths, angles, and dimensions for accurate construction.

Ratios & Proportional Reasoning

– Scale trap designs or adjust proportions for stability.