RS4K Book 1 — Biology (Ch 6-9): K-2 cells-as-molecules chapters. Foundation 100%, Gap 0.0%, Map Error 0.0%, Practices 92.9%, no FSEs. Cells, tissues, microbes framed at molecular level. Recommended Deep.
| Program | RS4K - Science Book 1 — Biology |
| Publisher | Gravitas Publications Inc. |
| Author | Rebecca Woodbury, Ph.D., M.Ed. |
| Grade Band | Grades 1-3 |
Verdict: ✓ Recommended — Deep. Foundation_calc 100.0%, deep tier. Practices 92.9% green (book-wide score). Zero map errors. 0 confirmed FSEs.
Strict atomic-foundation scoring. The Biology quarter of Book 1 (Chapters 6-9) uses the atoms-and-molecules framework established in the Chemistry quarter as the explanatory anchor. Adjusted Gap 0.0%, Map Error 0.0%.
Chapters 6-9 build directly on the Chemistry foundation. Ch 6 introduces biology as the study of living things and explicitly names the chemistry-to-biology bridge. Ch 7 covers taxonomy. Ch 8 defines cells as molecular: ‘Living things are made of atoms. We know from chemistry that atoms fit together to make molecules. In this chapter we will explore how molecules fit together to make living things.’ Ch 9 introduces microbes and viruses (a ‘bag of molecules covered with more molecules’).
"Living things are made of atoms. We know from chemistry that atoms fit together to make molecules. In this chapter we will explore how molecules fit together to make living things like frogs." (Ch 8, p. 68)
"Modern biologists continue to observe life, like Aristotle did thousands of years ago. However, unlike Aristotle, modern biologists can use chemistry and physics to help understand how living things work." (Ch 6)
"A virus is a bag of molecules covered with more molecules." (Ch 9)
FSE_CONFIRMED: 0. No factual science errors found.
Map errors: 0. No OAO error (REI-substance, REI-agent, LAE, AEC all zero).
Practices: 92.9% green. Six of seven NGSS scientific practices PRESENT; mathematics is PARTIAL. Every chapter operationalizes the full arc (question → hypothesis → experiment → data → conclusion → share). The practices score is computed book-wide and applies identically to all five subject entries.
Nothing structural. The Biology chapters score clean on every WWG metric.
The five RS4K Book 1 subject entries (Chemistry, Biology, Physics, Geology, Astronomy) all share Foundation 100%, Adjusted Gap 0.0%, Map Error 0.0%, Practices 92.9% — the curriculum’s architecture is uniform across subjects because Chemistry establishes the atoms-and-molecules framework that every other subject uses.
| Total Passages Scored | 20 |
| Raw Gap Error | 0.0% (11 mechanism passages — all anchored at atoms-and-molecules level) FALSE = atoms/molecules not present before students are asked to explain. The student is navigating without a starting point. |
| Adjusted Gap Error | 0.0% (0 UNSCAFFOLDED — atomic foundation established in Chemistry quarter, used throughout) UNSCAFFOLDED = no atomic grounding at all. LESSON_ATOMS = atoms mentioned elsewhere in lesson but not connected to this concept. |
| Substance-Model Errors (REI) | 0 Curriculum treats a process or outcome as a substance - "heat flows," "energy is stored," "electricity flows like water." Student builds a substance ontology. |
| Label-as-Explanation (LAE) | 0 Curriculum provides a name and treats it as an explanation - "this happens because of gravity." Student believes knowing the name IS understanding the concept. |
| Vague-Entity Errors (AEC) | 0 Curriculum uses vague entities ("tiny particles," "building blocks") without specifying atoms or molecules. Student invents their own model with macroscopic properties. |
| Factual Science Errors (FSE) | 0 Statements that are scientifically incorrect - not imprecise framing, but wrong. Any confirmed FSE = Not Recommended. |
| Practices | 92.9% - Deep Seven practices scored PRESENT, PARTIAL, or ABSENT and averaged: asking questions, developing and using models, planning and carrying out investigations, analyzing and interpreting data, using mathematics, constructing explanations and designing solutions, and argument from evidence. Higher is better, the opposite direction from gap and map errors. Reported but not part of the Foundation Score or the verdict. |
Cells, tissues, and microbes framed as collections of atoms and molecules.
Atomic foundation established in Chemistry (Ch 2-5) used throughout the Biology quarter. Cells, tissues, and microbes framed as collections of atoms and molecules. Practices 92.9% green (book-wide).
Recommended (Deep) — Deep by design -
Evidence for every entry is published at three levels. Each level states what it contains and what it leaves out.
Scores, verdict, and the full pattern count for this unit are above: adjusted gap, REI / LAE / AEC counts, FSE status, and the seven-practice score. Passage-level detail for this unit is carried in the downloadable evidence file.
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