StackCalc Learning Lab
The Learning Lab is the physical STEM education ecosystem engineered by StackCalc. Rather than generic novelty toys, every manipulative in the Learning Lab is an authentic, tactile instrument designed to pair 1:1 with the physical keys and dedicated register displays of our SC-6 Elementary and SC-32 Scientific RPN calculators.
The calculator's high-contrast, four-line reflective LCD screen is the real operational stack. Students manipulate physical models on their desk, observe how values are staged, and verify calculations on the live stack registers without hidden parenthesis logic.
The Physical Instrument Collection
All manipulatives are built on the open-source Gridfinity modular standard with tactile detents, dual-color filament lettering, debossed cartouche badges, and weighted rubber feet:
| Instrument | Calculator Integration | What It Makes Visible |
|---|---|---|
| Fraction Studio Towers | [FDISP] key |
Proportional stacking towers (1/1 to 1/8) where equivalent heights demonstrate common denominators and fraction reduction. |
| Ten-Frame Studio | [▦] Ten-Frame key |
Dual-color counters in 2×5 arrays and 8-bit register trays for place-value anchoring and base-10 decomposition. |
| Math Domino Studio | Doubles facts / Part-part-whole | Precision dominoes in 12-frame debossed trays illustrating additive composition and associative grouping. |
| Place Value Studio | [PV] Place Value key |
Proportional base-10 units, rods, flats, and thousands cubes matching register staging. |
| Algebra Studio & Factoring Stage | [POLY] Polynomial solver |
Quadratic factoring frames and area tiles (\(x^2\), \(x\), \(1\)) for tactile polynomial expansion and binomial root solving. |
| Classroom Planetary Clock | [🕒] Time key |
Geared mechanical gear train with visible epicyclic movement linking 60-minute cycles directly to fractional hours. |
| Unit Circle Trig Volvelle | [SIN], [COS], [RAD], [π] keys |
Dual-rotor rotating dial showing exact radian-degree equivalents, coordinates, and exact radical ratios. |
| Probability Dice & Spinner | [Σ+], [x̄] Statistics keys |
Weighted dice sets and calibrated spinner for empirical frequency logging and real-time mean/standard deviation. |
| Prime Factor Studio | [g] [FACT] Prime Factor key |
Proportional logarithmic prime factor blocks ([2] through [23]) that stack to sum logarithms and prove unique factorization. |
| Counting & Array Tiles | [ENTER] & [×] Array keys |
144 1U counting tiles across 4 colors for rectangular arrays, partial products, and Four-Color Map Theorem investigations. |
| SC-6 Quest Scoreboard & +10 Token Kit | [f] [?] (?) Tutorial / Quiz key |
Simplified 2-piece 3×1×7U scoreboard lid (1–10, 100 Mastery Tower, and ? badge) with 60 universal +10 tokens (1 block = +10 pts / 1st Way, 2 stacked = +20 pts / 2nd Way). |
Concrete-Pictorial-Abstract (CPA) Pedagogy
StackCalc directly implements Jerome Bruner’s CPA progression and Singapore Math methodologies:
- Concrete: Students physically construct quantities, group counters, rotate volvelles, or factor algebraic tiles.
- Pictorial: Students sketch representations, tape diagrams, or area models into their printed lab sheets.
- Abstract: Students push values onto the calculator's hardware stack (
[ENTER]), apply operations, and inspect register state.
Download Educational Literature & 3D Models
All classroom curriculum, teacher guides, student proficiency trials, and 3D printing files are fully open-source:
| Literature & Print Files | Description | Format |
|---|---|---|
| Book 1: Unified Master Teacher's Guide | 50-page K–12 teacher guide organized by mathematical concept, including Middle School coaching & 900 keys, plus 12 Separate Printable 4-Page Unit PDFs. | Letter PDF · Print Units 01–12 |
| Book 2: K–12 Student Hands-On Math Lab Workbook | 29-page student exploration workbook for Units 01–12 with Guided Stack Walkthroughs, 48 Lab Investigations, and Student Self-Check Answer Key. | Letter PDF |
| Book 3: Big Ideas Middle School Supplement (45 Sections) | 114-page Two-Method Student Workbook (10 Chapter Openers, 90 Practice A & B worksheets, 900 problems, Student Self-Check Key) + 10 Separate Printable Chapter PDFs. | Full Workbook (114p PDF) · Print Chapters 1–10 |
| Book 4: Student Speed & Proficiency Trials | 21-page timed RPN speed sprint workbook (15 Sprints + Self-Check Answer Keys + Speed Tactics). | Letter PDF |
| Hardware Reference Cards | Desk cards summarizing RPN stack operations, Quest Scoreboard +10/+20 scoring, trigonometry volvelle reading, and fraction conversions. | Letter PDF |
| Printable STL / 3MF Models | Complete 3D manufacturing files for all manipulative kits on Printables with calibrated Bambu Lab and Prusa print profiles. | Printables Hub ↗ · Makerspace Kits Guide |
Read the related documentation and lesson guides: