MATH30B-L005 - Exponential growth in the water enterprise
MATH30B is delivery. Official identities remain 30-1, 30-2, 30-3. 90 combined-classroom lessons (~18 weeks × 5). Braiding adjusts the shared calendar; it does not delete strand outcomes. 10-session bootcamp overlays weeks 1-2 only.
Bootcamp overlay (weeks 1-2 only): session-05.html. Full course continues through week 18. Overlay does not shrink 30-1/30-2/30-3 to ten outcomes.
Canonical combined lesson MATH30B-L005 · week 1 day 5 · ENHANCED_BOOTCAMP_OVERLAY
MATH30B-L005 - Exponential growth in the water enterprise
- Delivery id: MATH30B (combined classroom; not a fourth credential)
- Official courses: Mathematics 30-1 (MAT3791), 30-2 (MAT3792), 30-3 (MAT3793)
- Lesson ID:
MATH30B-L005 - Calendar: Week 1 Day 5 of 18 weeks × 5 days (lesson 5 of 90)
- Object type: canonical combined-classroom lesson
- Braid class: B
- Bootcamp overlay:
sessions/session-05.md(weeks 1-2 start maps; this file is still a full pack lesson with three workshops) - Labels: ALL STRANDS launch → 30-1 REQUIRED / 30-2 REQUIRED / 30-3 REQUIRED workshops → CROSS-STRAND EXPOSURE ≠ mastery
- Source: Alberta Mathematics 10-12 Program of Studies, https://open.alberta.ca/publications/mathematics-grades-10-12
- Official outcome IDs today:
MATH30-1-TRIGONOM-07-013,MATH30-2-LOGICALR-04-012,MATH30-2-RELATION-05-013,MATH30-2-RELATION-06-014,MATH30-3-X-03-007
Calendar honesty: This is week 1 day 5 of 18×5. It is not “the whole course.” Remaining 30-1 (24), 30-2 (17), and 30-3 (11) specific outcomes continue in weeks 3-18.
Labels (post on the board)
- ALL STRANDS - shared launch only.
- 30-1 REQUIRED - MAT3791 tray; mastery evidence for 30-1 SOs listed below.
- 30-2 REQUIRED - MAT3792 tray; mastery evidence for 30-2 SOs listed below.
- 30-3 REQUIRED - MAT3793 tray; mastery evidence for 30-3 SOs listed below.
- CROSS-STRAND EXPOSURE ≠ mastery - hearing another tray is logged as EXPOSURE, never as an SO tick, never as a silent enrolment change.
ALL STRANDS launch (~10-14 min)
Water-enterprise users grow. 30-1 starts log definition; 30-2 models with laws/tech; 30-3 critiques expense vs sales.
Clock ~75 min unless the school uses 60; cut the workshop block first, never the strand exit ticket. Class C parallel workshops are the default when one strand is on exclusive work.
Official outcomes (REQUIRED on home strand)
| Strand | Official ID | Role today |
|---|---|---|
| 30-1 | MATH30-1-TRIGONOM-07-013 | REQUIRED - Demonstrate an understanding of logarithms |
| 30-2 | MATH30-2-LOGICALR-04-012 | REQUIRED - Demonstrate an understanding of logarithms and the laws of logarithms |
| 30-2 | MATH30-2-RELATION-05-013 | REQUIRED - Solve problems that involve exponential equations |
| 30-2 | MATH30-2-RELATION-06-014 | REQUIRED - Represent data, using exponential and logarithmic functions, to solve problems |
| 30-3 | MATH30-3-X-03-007 | REQUIRED - Critique the viability of small business options by considering: • expenses • sales • profit or loss |
30-1 workshop - 30-1 REQUIRED
Clock: ~22-28 min after launch (cut workshop before cutting the strand exit ticket). Learners on this tray stay on 30-1.
MATH30-1-TRIGONOM-07-013
Official text: Demonstrate an understanding of logarithms
Worked example (unique to this hour, this strand, this SO): Rewrite 7^9=40353607 in log form. Evaluate log_7(49) exactly. Explain log_71=0 and why log_7(−3) is not real.
| Level | Prompt (inside the home strand) |
|---|---|
| FOUNDATION | log_10 1000. |
| CORE | Convert b^x=a to log form. |
| PROFICIENT | Exact log of a power of the base. |
| ADVANCED | Change-of-base preview. |
Diagram: Timing: after retrieval, before independent practice. Do not open the diagram during the first retrieval prompt. VIS-M30-EXPLOG: y=b^x and y=log_b x as inverse graphs.
Independent practice: a new instance of today’s SO(s) with different numbers than the worked example. Two sentences on reasonableness.
Wrong-answer repair (do not praise):
30-1SO 013: Writing log_b a = b^a, or logging a negative as if it were real. Repair: name the first wrong line, replace it, and re-complete the CORE tray item. Do not praise the wrong line.
30-2 workshop - 30-2 REQUIRED
Clock: ~22-28 min after launch (cut workshop before cutting the strand exit ticket). Learners on this tray stay on 30-2.
MATH30-2-LOGICALR-04-012
Official text: Demonstrate an understanding of logarithms and the laws of logarithms
Worked example (unique to this hour, this strand, this SO): Users grow from 65 at annual factor 1.09. Write a log to find years to reach 195. Apply one product or power law in the setup, then a technology check. Not 30-1 exact-only demand.
| Level | Prompt (inside the home strand) |
|---|---|
| FOUNDATION | Meaning of log in a growth sentence. |
| CORE | One law in a story. |
| PROFICIENT | Tech check after setup. |
| ADVANCED | Reasonableness limits. |
Diagram: Timing: after retrieval, before independent practice. Do not open the diagram during the first retrieval prompt. VIS-M30-EXPLOG in a growth story (not 30-1 exact-only demand).
MATH30-2-RELATION-05-013
Official text: Solve problems that involve exponential equations
Worked example (unique to this hour, this strand, this SO): Solve 1.09^t = 5 using logs or tech after a table guess. State what the solution means for the water-enterprise users and one model limit.
| Level | Prompt (inside the home strand) |
|---|---|
| FOUNDATION | Guess-check table for a^t=k. |
| CORE | Log or tech solve. |
| PROFICIENT | Model limits. |
| ADVANCED | Compare two growth models. |
Diagram: Timing: after retrieval, before independent practice. Do not open the diagram during the first retrieval prompt. Table-to-equation growth model.
MATH30-2-RELATION-06-014
Official text: Represent data, using exponential and logarithmic functions, to solve problems
Worked example (unique to this hour, this strand, this SO): Given points (0,17), (1,18), (2,20), choose exponential vs linear and write a model in words plus an equation. Residual: one point off by 7.
| Level | Prompt (inside the home strand) |
|---|---|
| FOUNDATION | Table to graph. |
| CORE | Choose exp vs linear. |
| PROFICIENT | Fit language. |
| ADVANCED | Residual talk. |
Diagram: Timing: after retrieval, before independent practice. Do not open the diagram during the first retrieval prompt. Scatter + exponential/log model VIS-M30B-DATA.
Independent practice: a new instance of today’s SO(s) with different numbers than the worked example. Two sentences on reasonableness.
Wrong-answer repair (do not praise):
30-2SO 012: Applying 30-1 exact-only demands as if they were this SO, or illegal log sums. Repair: name the first wrong line, replace it, and re-complete the CORE tray item. Do not praise the wrong line.30-2SO 013: Reporting a negative time without checking the model. Repair: name the first wrong line, replace it, and re-complete the CORE tray item. Do not praise the wrong line.30-2SO 014: Forcing a linear model on clearly exponential data. Repair: name the first wrong line, replace it, and re-complete the CORE tray item. Do not praise the wrong line.
30-3 workshop - 30-3 REQUIRED
Clock: ~22-28 min after launch (cut workshop before cutting the strand exit ticket). Learners on this tray stay on 30-3.
MATH30-3-X-03-007
Official text: Critique the viability of small business options by considering: • expenses • sales • profit or loss
Worked example (unique to this hour, this strand, this SO): Month expenses $1000, sales $1225, so profit/loss = sales − expenses. Second scenario: sales drop 15%. Critique viability (can this hygiene kiosk continue?).
| Level | Prompt (inside the home strand) |
|---|---|
| FOUNDATION | Label expense vs revenue. |
| CORE | Compute profit or loss. |
| PROFICIENT | Critique viability. |
| ADVANCED | Two scenarios. |
Diagram: Timing: after retrieval, before independent practice. Do not open the diagram during the first retrieval prompt. Ledger: expenses, sales, profit or loss.
Independent practice: a new instance of today’s SO(s) with different numbers than the worked example. Two sentences on reasonableness.
Wrong-answer repair (do not praise):
30-3SO 007: Calling revenue “profit,” or ignoring a category of expense. Repair: name the first wrong line, replace it, and re-complete the CORE tray item. Do not praise the wrong line.
CROSS-STRAND EXPOSURE ≠ mastery
- CROSS-STRAND EXPOSURE ≠ mastery. Log D items. Do not tick another strand’s SO.
- AI Tutor must not treat an exposure card as proficiency.
Project or clean math
Project (Sustainable Community Water & Hygiene) - genuine math only: 30-1: users, rates, or sampling paths - composition, logs, or FCP/nPr as today’s SO requires. 30-2: model users, kits, or committees with today’s relation/counting SO. 30-3: site layout, vehicle if the enterprise needs one, ledger, linear fill-rate, or measurement of volume/chlorine - matching today’s SO.
AI Tutor
- Load the authorized home strand only: MAT3791 (Mathematics 30-1) or MAT3792 (Mathematics 30-2) or MAT3793 (Mathematics 30-3) from the authorized profile.
- Never silent-switch a struggling 30-1 learner into 30-2/30-3 banks (or the reverse) to “make it easier.”
- Serve today’s home-strand SOs. Exposure cards are read-only.
- Never dump diploma keys or released exam wording. Original items only.
- Wrong answers: name the error and repair; do not praise.
Human-tutor handoff
Call a human tutor when: the learner cannot complete CORE after two documented repairs; an identity proof (30-1 006) is stuck after the identity map; a 30-2 017 source is unsafe or empty; a 30-3 vehicle/business number is being faked to match a hoped-for answer; distress, disclosure, or a request to change official enrolment. Enrolment changes are an office/PASI process, not a tutor action.
Diagram / whiteboard
Approved starter math30-quadratic-shift. Strand workshops may add axes/tables. Never praise a translated parabola as a circle.
Strand exit ticket (~8-12 min)
Collect only the home-strand row. Exposure ≠ mastery. Lesson MATH30B-L005.
| Home strand | Primary SO | Exit ticket (unique to this lesson) |
|---|---|---|
| 30-1 | MATH30-1-TRIGONOM-07-013 | CORE exit: Rewrite 7^9=40353607 in log form. Evaluate log_7(49) exactly. Explain log_71=0 and why log_7(−3) is not real. FOUNDATION alternate: log_10 1000. Do not submit another strand’s ticket as 30-1 mastery. |
| 30-2 | MATH30-2-LOGICALR-04-012 | CORE exit: Users grow from 65 at annual factor 1.09. Write a log to find years to reach 195. Apply one product or power law in the setup, then a technology check. Not 30-1 exact-only demand. FOUNDATION alternate: Meaning of log in a growth sentence. Do not submit another strand’s ticket as 30-2 mastery. |
| 30-3 | MATH30-3-X-03-007 | CORE exit: Month expenses $1000, sales $1225, so profit/loss = sales − expenses. Second scenario: sales drop 15%. Critique viability (can this hygiene kiosk continue?). FOUNDATION alternate: Label expense vs revenue. Do not submit another strand’s ticket as 30-3 mastery. |
Provenance
Official IDs/text: _official_math_calm_outcomes.json. Pacing: MATH30_COMBINED_CLASSROOM_PACING.md. Crosswalk: MATH30_1_30_2_30_3_OUTCOME_CROSSWALK.csv. Generated by oeom/core/training/rapid3/write_math30b_lessons.py.
Visual task (BEFORE_LAB): Inspect the visual, notice labels, and answer the lesson prompt.
MATH30B MATH30B L005 worked visual 005
Visual task (BEFORE_LAB): Inspect the visual, notice labels, and answer the lesson prompt.
Open table abv-math30b-0105 - MATH30B MATH30B L005 table 105
Open full table (lazy). Alt: MATH30B MATH30B L005 table 105. Full instructional table for MATH30B.