A phenomena-driven chemistry semester built to make sense of the invisible world.
Every unit launches with a puzzling real-world event. Every lesson is designed to reduce cognitive load while deepening particle-level understanding — through the 3D STEELS standards.
10-Unit Journey Through Matter
Click any unit node to jump to its full page →
Three Interlocking Frameworks
Every lesson weaves together three research-backed systems to create a coherent learning experience.
Cognitive Load Theory
Pre-drawn base pictorial layouts, integrated formats, and faded scaffolding reduce extrinsic load so working memory focuses on sense-making, not logistics.
3D Storyline Design
Each unit is anchored to a real, puzzling phenomenon. A Driving Question Board tracks what students figure out across the 5E sequence toward a synthesis CER.
Triple E Technology
Digital tools are audited for Engagement, Enhancement, or Extension — ensuring they elevate unobservable reasoning without adding unnecessary cognitive load.
"Welcome to a phenomena-driven chemistry semester designed to minimize extrinsic load while maximizing student sense-making through the 3D STEELS standards."
How Every Lesson Is Built
A predictable double architecture reduces cognitive friction and allows students to focus mental energy on sense-making rather than navigation.
3D Storyline Design
Every unit is anchored to an anchor phenomenon that creates narrative tension. The Driving Question Board tracks which questions students can and cannot yet answer, creating a coherent storyline across all five 5E phases.
Engage → Explore → Explain → Elaborate → Evaluate
Cognitive Load Theory
Initial models use base pictorial layouts (pre-drawn container outlines). As expertise grows, scaffolding is faded. Integrated formats place diagrams, data tables, and instructions on the same page to eliminate split-attention.
Germane load maximized → Extrinsic load eliminated
The Four-Part Lesson Structure
Review / Activate
Brief retrieval of prior knowledge using AMTA whiteboard checks or a targeted exit ticket review. Connects to the ongoing storyline.
Model / Explicit Instruction
Teacher demonstrates the unobservable-to-observable connection. Uses base pictorial layouts, zoom-in circles, and I Do worked examples.
Guided Sense-Making
Students work in AMTA modeling groups on lab investigations, card sorts, or collaborative whiteboard tasks with faded scaffolding.
Exit Ticket
A focused two-question formative check — one macroscopic observation, one particle-level explanation — informing the next day's lesson.
Faded Scaffolding Across the Semester
The Triple E Framework
Every digital tool in this course must earn its place by meeting at least one of three rigorous goals.
Lower the Barrier
Digital tools that chunk complex phenomena into accessible entry points — short video clips, collaborative digital DQBs — so all students can participate in the initial sense-making.
Visualize the Invisible
Simulations and sensors that make unobservable particle interactions directly visible — PhET simulations, digital temperature probes, live graphing software, 3D molecular rendering.
Bridge to the Real World
Tools that connect classroom models to authentic applications — ocean acidification data, NASA visualizations, collaborative platforms like Padlet or Miro that link to real-world experts.
Standards Coverage Map
All PA STEELS Physical Science standards for chemistry addressed across the 10-unit storyline.
| Standard Code | Description | Units Addressed |
|---|---|---|
| 3.2.9-12.A | Structure and Properties of Matter Periodic patterns, electron states, atomic structure and observable bulk properties. |
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| 3.2.9-12.B | Electrical Forces and Bulk Structure Electrical interactions between particles; how bonding determines structural properties. |
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| 3.2.9-12.C | Outcomes of Chemical Reactions Conservation, energy changes, reaction types, and quantitative prediction. |
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| 3.2.9-12.G | Mass Conservation and Mathematical Models Balancing equations, stoichiometric ratios, mole concept as a mathematical bridge. |
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| 3.2.9-12.N | Solutions and Concentration Solute-solvent interactions, molarity, dilution, and colligative properties. |
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| 3.2.9-12.O | Energy and Thermochemistry Heat, temperature, phase changes, heating/cooling curves, energy transfer. |
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| 3.2.9-12.P | Kinetic Molecular Theory Particle motion, gas behavior, pressure, diffusion, and compressibility. |
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| 3.2.9-12.R | Reaction Dynamics and Equilibrium Collision theory, reaction rates, Le Chatelier's principle, and dynamic balance. |
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| 3.2.9-12.V | Wave / Particle Models and Light Electromagnetic spectrum, wavelength/frequency, electron transitions, line spectra. |