# Calculating Offsets in Plumbing

## Calculating Offsets in Plumbing

Calculating offsets using multiple step formulas to determine measurements of pipes when installing around obstacles.

**Please note that some of these tasks are beyond Level 3**

- Pen and paper
- Calculator with square root
- Attached document - Understanding Offsets in Plumbing

### A1. Read continuous text

Competency A: **Find and Use Information**

Task Group A1: **Read continuous text**

Level: **2**

At this level, learners: **Read texts to locate and connect ideas and information**

**Performance Descriptors**

The learner:

• Makes connections between sentences and between paragraphs in a single text

• Scans text to locate information

• Locates multiple pieces of information in simple texts

• Reads more complex texts to locate a single piece of information

• Makes low-level inferences

• Follows the main events of descriptive, narrative, and informational texts

• Obtains information from detailed reading

• Begins to identify sources and evaluate information

**Task Descriptors**

• Scope of task is clearly defined

• Involves one text

• Is one paragraph or longer

• May include unfamiliar elements (e.g. vocabulary, context, topic)

**Text types:**

instructional, descriptive, narrative, and informational texts

**Examples: **

- Letters
- Emails
- Notices

**ESKARGO:**

Embedded Skills, Knowledge and Attitudes Reference Guide for Ontario - A1.2

### A2. Interpret documents

Competency A: **Find and Use Information**

Task Group A2: **Interpret documents**

Level: **2**

At this level, learners: **Interpret simple documents to locate and connect information**

**Performance Descriptors**

The learner:

- Performs limited searches using one or two search criteria
- Extracts information from tables and forms
- Locates information in simple graphs and maps
- Uses layout to locate information
- Makes connections between parts of documents
- Makes low-level inferences
- Begins to identify sources and evaluate information

**Task Descriptors**

- Scope of task is clearly defined
- Involves one document
- Uses a simple format
- Displays a limited amount of information
- Is typically up to one page in length
- May include unfamiliar elements (e.g. vocabulary, context, topic)
- Documents at this level may contain a paragraph or more of text

**Examples:**

- Forms
- Tables
- Simple graphs
- Street maps
- Simple flow charts
- Floor plans

**ESKARGO:**

Embedded Skills, Knowledge and Attitudes Reference Guide for Ontario – A2.2

### C3. Use measures

Competency C: **Understand and Use Numbers**

Task Group C3: **Use measures**

Level: **3**

At this level, learners: **Use measures to make multi-step calculations; use specialized measuring tools**

**Performance Descriptors**

The learner:

- Calculates using numbers expressed as whole numbers, fractions, decimals, percentages, and integers
- Calculates the radius, diameter, and circumference of circles
- Understands and uses properties of angles and triangles to solve problems
- Understands and uses formulas for finding the perimeter, area, and volume of non-rectangular, composite shapes
- Manages unfamiliar elements (e.g. context, content) to complete tasks
- Makes estimates involving many factors where precision is required
- Interprets and represents measurements taken with specialized tools (e.g. callipers, multimeters)
- Chooses and performs required operations; makes inferences to identify required operations
- Selects appropriate steps to solutions from among options
- Identifies a variety of ways to complete tasks
- Interprets, represents, and converts measures using whole numbers, decimals, percentages, ratios, and fractions
- Organizes and displays numerical information (e.g. graphs, tables)
- Uses strategies to check accuracy (e.g. estimating, using a calculator, repeating a calculation, using the reverse operation)

**Task Descriptors**

- Scope of task may not be clearly defined
- May include unfamiliar elements (e.g. context, content)
- Requires multi-step calculations where one step builds on the previous step
- Requires the use of rates or common formulas or both
- May require converting measurements to make calculations
- May involve documents (e.g. rate tables, scale drawings)
- May require converting between whole numbers, decimals, fractions, ratios, and percentages
- May require converting between measurement systems or between units in one system

**ESKARGO:**

Embedded Skills, Knowledge and Attitudes Reference Guide for Ontario – C3.3