Lesson 55 Teacher Guide & Scoring Rubric
Teacher Key
Pedagogical Connections: Connects back to Lesson 50 (Iron nails) and forward to furniture assembly. Emphasizes mechanical action terms (planing, fastening, shaving) and the transformation of raw rough-sawn lumber into smooth, functional household furniture.
Standards Addressed: CCSS.ELA-LITERACY.RI.2.1 (Technical Process), L.2.1.F (Declarative Sentences), L.2.5.A (Real-world word connections).
Section 1: Carpentry Materials & Construction
1. Material & Maker: wood (timber) / carpenter (cabinetmaker).
2. Fasteners: nails, screws, glue, wooden pegs, mortise-and-tenon joints.
3. Nail Material: iron or steel.
4. Animal Glue: hides or bones (animal gelatin).
Section 2: Smoothing the Boards: Planing
A. Wood Ribbons: shavings.
B. Declarative Sentence: The rough boards are made smooth by planing them with a hand plane.
Section 3: Why a Table Must Be Smooth (Sample Response)
A tabletop must be planed smooth so people do not get sharp splinters in their hands. A smooth surface also allows children to write neatly on paper without bumps.
Section 4: The Table in Family Life (Sample Response)
Our family gathers around the table every evening to share a warm dinner and talk about our day.
• Explaining "Planing": If possible, show a picture or model of a woodworking hand plane. Explain that it slices off micrometer-thin curls of wood to produce a mirror-smooth tabletop.
• Origin of Glue: Note that before synthetic resins, craftsmen boiled animal connective tissue (collagen) to produce hide glue, which held wooden furniture together for centuries.
| Evaluation Metric |
Exemplary (5 Pts) |
Proficient (3-4 Pts) |
Developing (1-2 Pts) |
| Carpentry Facts |
Accurately identifies wood, carpenter, fasteners (nails/glue), and planing process. |
Identifies main materials and carpenter correctly; understands planing. |
Confuses fasteners or misses how boards are smoothed. |
| Declarative Sentence |
Constructs a complete, well-formed sentence explaining planing with proper punctuation. |
Writes a complete sentence with minor mechanical slip. |
Outputs a fragmented phrase or single word. |
| Explanatory Reasoning |
Clearly articulates why tables must be smooth (splinters, writing surface). |
Explains why tables are smooth in 2 clear sentences. |
Reasoning is brief, repetitive, or incomplete. |
| Handwriting & Form |
Neat, uniform handwriting on lines; excellent spacing and capitalization. |
Legible handwriting; minor spacing inconsistencies. |
Handwriting uneven or difficult to read. |