# 1.15: Problem-Solving Models

Difficulty Level:

**Basic**Created by: CK-12
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Model

Model

A model is a mathematical expression or function used to describe a physical item or situation.Proportion

Proportion

A proportion is an equation that shows two equivalent ratios.Volume

Volume

Volume is the amount of space inside the bounds of a three-dimensional object.### Image Attributions

## Description

Learn how to solve problems using a step-by-step strategy.

## Learning Objectives

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Basic## Tags:

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## Date Created:

Feb 24, 2012## Last Modified:

Aug 20, 2015## Vocabulary

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