Lesson 1: Trial and Error: Maneuvering & Parallax

Why does a hoop appear to be in a different location when viewed from the pool deck versus looking through the water?

How do you use "burst thrusting" to maintain control without overshooting your target?

What is the "arc of the tether," and how does it limit your range of motion?

Parallax: The displacement or difference in the apparent position of an object viewed along two different lines of sight.

Oversteer: When a pilot applies too much thrust, causing the ROV to swing past the intended heading.

Tether Drag: The frictional force exerted by the water on the umbilical cable that pulls the ROV backward.

Momentum: The quantity of motion of a moving body; crucial for "coasting" through hoops.

NGSS HS-ETS1-3: Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs.

ITEEA STEL-2T: Demonstrate the use of models to identify conflicting design considerations (Control vs. Environment).

Description: Students spend four days in the "test tank" or pool. They practice basic maneuvers: the "D-Turn," vertical diving, and the "Station Keep" (holding the ROV still in a current). They must navigate through a single practice hoop multiple times.

Purpose: To develop the hand-eye coordination required for the final challenge and to identify any mechanical flaws (like a motor that turns more slowly than the other) before the graded run.

DOK Level: Level 3 (Strategic Thinking). Students must develop a "mental model" of how their specific ROV reacts. They are not just following instructions; they are interpreting visual data and physical feedback to refine their piloting strategy.

In this course, we recognize that students enter the lab with varying levels of technical experience. Our differentiation strategy employs a 'Scaffolded Autonomy' approach. We provide structured, step-by-step guidance for foundational concepts while offering open-ended, 'Design Challenge' extensions for advanced learners. By utilizing peer-mentorship models, diverse instructional media (visual, tactile, and digital), and flexible project pathways, we ensure every student can move from consumer to creator at their own pace.

The "Box Drill": Students must pilot the ROV in a perfect square (Forward 5ft, Turn 90°, repeat) and return to the starting point.