Algebra Unit 1 — Linear Expressions, Equations, And Constraints
Traceability draft for Product B (pathway with evidence): each lesson lists a measurable outcome, a summative artifact, and a link to the live lesson. Rubrics and draft workspace appear in each lesson's Wrap + Next Bridge step.
| Lesson | Measurable outcome | Summative artifact | Lesson |
|---|---|---|---|
| Variables, Units, And Baseball Quantities | Learner defines symbols with units, rejects incompatible operations, and translates a dugout question into a valid expression. | Mini symbol dictionary + coach sentence + valid/invalid operation pair | Open |
| Solving One-Step And Multi-Step Equations Reliably | Learner solves a linear baseball constraint with an annotated inverse-operation path and verifies by substitution. | Equation solve with audit trail (multi-line + verification + plausibility sentence) | Open |
| Inequalities For Performance Threshold Questions | Learner maps policy language to inequalities, solves correctly with direction discipline, and names a feasible interval. | Policy → inequality → interpretation brief | Open |
| Rearranging Formulas Used In Baseball Metrics | Learner rearranges two standard metric identities for planning variables and runs feasibility screening on numeric examples. | Two rearrangements with coach-use sentences + checks | Open |
| Algebra Error Checking And Sanity Bounds | Learner documents a QA path with explicit sanity checks, failure actions, and staff-ready communication for one workflow. | One-page QA memo (template + rubric + calibration anchors in lesson) | Open |
Shared rubric (four criteria)
Baseball context; Units & symbols; Reasoning & checks; Staff-ready communication — see each lesson's summative panel for the full four-level descriptors used for self-review and instructor pilots.