Kelmar Water Plant Mural Map: A Scale-Plan Worksheet | Free Grade 7 Art & Music Worksheet

Grade: Grade 7
Subject: Art & Music
Material: Worksheet
Time: 30 min
Prep: No prep
Materials: None

Standards

7.G.A.1 Common Core Math

Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from a scale drawing and reproducing a scale drawing at a different scale.

How this material aligns: Students compute actual wall lengths and a mural area from a scale floor plan, place a sign by scaling a real distance to the drawing, and redraw one wall at a new scale, the work this standard names.

All materials for 7.G.A.1 →

Download Word file

This material is in the public domain (CC0) and may be copied, edited, and shared freely, without attribution. Updated 2026-07-23.

Objectives

Students will compute actual lengths from a scale floor plan.
Students will find the area of a mural wall from scaled measurements.
Students will convert a real distance to a scale-drawing distance.

Vocabulary

Key words: scale, floor plan, area, mural

Teacher overview

A water plant that offers school tours often adds a mural and signs along the route. To plan that art, a designer works from the plant's floor plan, which is drawn to scale. This worksheet uses the fictional Kelmar water plant and a plan drawn at 1 inch equals 10 feet. Students read the plan to find real wall lengths, size a mural, and place a sign, keeping every measurement to scale. The same reading skills let a designer trust a plan instead of guessing sizes on site.

Kelmar Water Plant Mural Map: A Scale-Plan Worksheet — Grade 7 Art & Music

Name: ____________________________ Date: ______________

Student Worksheet

Suppose the fictional Kelmar water plant is planning a tour mural. The floor plan uses a scale of 1 inch equals 10 feet.

On the plan, the front wall is 6 inches long. How long is the real wall?
The lobby is 3 inches wide on the plan. How wide is the real lobby?
A mural wall is 8 inches long on the plan. How long is the real wall?
The mural will cover a real wall 80 feet long and 10 feet tall. What is its area in square feet?
At the same scale, how tall would the 10-foot mural wall be on a drawing of the wall itself (an elevation)?
A sign post will stand 25 feet from the front door. How far is that on the plan?
A new plan uses 1 inch equals 5 feet. On the new plan, how long is the 80-foot mural wall?
Explain why the scale of 1 inch equals 5 feet makes the drawing larger than the scale of 1 inch equals 10 feet.

From Water for Schools (waterforschools.org). This material is in the public domain (CC0) and may be copied, edited, and shared freely.

Answer Key

Answer: 60 feet.
6 inches times 10 feet per inch equals 60 feet.
Answer: 30 feet.
3 inches times 10 feet per inch equals 30 feet.
Answer: 80 feet.
8 inches times 10 feet per inch equals 80 feet.
Answer: 800 square feet.
80 feet times 10 feet equals 800 square feet of wall.
Answer: 1 inch.
10 feet divided by 10 feet per inch equals 1 inch on the elevation.
Answer: 2.5 inches.
25 feet divided by 10 feet per inch equals 2.5 inches.
Answer: 16 inches.
80 feet divided by 5 feet per inch equals 16 inches.
Answer: At 1 inch equals 5 feet, each inch stands for fewer feet, so the same wall needs more inches, and the whole drawing comes out larger. Drafters call this a larger scale.

Differentiation

Support

Give students a scale strip that lists inches and matching feet (1 inch, 10 feet; 2 inches, 20 feet) so they read conversions from the strip. Allow a calculator for the area in item 4.

Extension

Ask students to plan two more signs at real distances of 40 feet and 65 feet from the door, give each distance on both plans, and note which plan makes the signs easier to place accurately.

ELL supports

Pre-teach "scale," "floor plan," and "area" with a labeled sketch of a simple room. Provide the sentence frame "___ inches times 10 feet equals ___ feet" for the conversion items.