Title  Description  Thumbnail Image  Curriculum Topics 

Construction Site Math: Ratios 
In this realworld application of ratios, students will learn what a ratio is, including ratios with three terms. They will see different ways of writing ratios, including fractions in simplest form. a:b $\frac{a}{b}$ a to b Two short videos introduce the concept of ratios and each video includes realworld examples of ratios. Then several formative assessments are used to test for understanding. Students then look at the application of ratios to the mixing of concrete at a construction site, starting with a video then followed by an assessment. This lesson can be assigned to individual students or teams of students. The lesson can be completed in about 20 minutes. 

Video Tutorial: Ratios: Ratios with Three Items 
Video Tutorial: Ratios: Ratios with Three Items. In this video, students look at ratios of the form a:b:c. Analyze pairs of ratios and see how they can be combined into one ratio. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Ratios and Rates: Ratios as Decimals 
Video Tutorial: Ratios and Rates: Ratios as Decimals. In this video, students explore ratios whose terms are decimals. Students are shown techniques for simplifying these types of ratios in ;the context of solving realworld ratio problems. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
VIDEO: Brief Review: What Is a Rational Number? 

Numerical Expressions  
Video Tutorial: Ratios: Fractional Ratios 
Video Tutorial: Ratios: Fractional Ratios. In this video look at ratios of the form a:b and a:b:c, where the terms in the ratio are fractions. Techniques are shown for converting fractional ratios to whole number ratios. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Percents: FractionPercent Conversion 
Video Tutorial: Ratios: FractionPercent Conversion. In this video learn how to convert percents to fractions to simplify percent operations. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Percents  
VIDEO: Brief Review: Adding and Subtracting Rational Numbers 
In this Brief Review, the addition and subtraction of rational numbers is explored. Note: The download is an MP4 file. 
Numerical Expressions  
Video Tutorial: Ratios: Ratios and Fractions 
Video Tutorial: Ratios: Ratios and Fractions. In this video, students look at at the similarities and differences between ratios and fractions. We also show how to derive fractional relationships from ratios. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Ratios: Application of Ratios: Roofs and Ramps 
Video Tutorial: Application of Ratios: Roofs and Ramps. In this video, we explore the application of ratio concepts to the pitch of a roof and the slope of a ramp. Several realworld examples are explored. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Applications of Ratios, Proportions, and Percents, Proportions  
VIDEO: Brief Review: Multiplying Rational Numbers 
In this Brief Review, multiplying rational numbers is explored. Note: The download is an MP4 file. 
Numerical Expressions  
Video Tutorial: Ratios: Visual Models for Ratios 
Video Tutorial: Ratios: Visual Models for Ratios. In this video, we look at different visual models for solving ratio problems. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Rational Numbers: What Are Rational Numbers? 
Video Tutorial: Rational Numbers: What Are Rational Numbers? In this video, students learn the basic definition of rational numbers and look at realworld applications of them. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3eZIU07 
Rational Expressions  
VIDEO: Brief Review: Dividing Rational Numbers 
In this Brief Review, division of rational numbers is explored. Note: The download is an MP4 file. 
Numerical Expressions  
Video Tutorial: Ratios: Numerical Models for Ratios 
Video Tutorial: Ratios: Numerical Models for Ratios. In this video, we look at different numerical models for solving ratio problems. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Rational Numbers: Rational Numbers and Irrational Numbers 
Video Tutorial: Rational Numbers: Rational Numbers and Irrational Numbers. In this video, students learn to distinguish rational numbers from irrational numbers. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3eZIU07 
Rational Expressions  
VIDEO: Brief Review: Applications of Rational Numbers 
In this Brief Review, applications of rational numbers are explored. Note: The download is an MP4 file. 
Numerical Expressions  
Video Tutorial: Ratios: Equivalent Ratios 
Video Tutorial: Ratios: Equivalent Ratios. In this video we look at equivalent ratios and solve problems that involve the use of equivalent ratios A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Rational Numbers: Rational Numbers on a Number Line 
Video Tutorial: Rational Numbers: Rational Numbers on a Number Line. In this video, students explore rational numbers on a number line. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3eZIU07 
Rational Expressions  
Video Tutorial: Ratios: Rates 
Video Tutorial: Ratios: Rates. In this video we look at rates. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Rational Numbers: Rational Numbers and Absolute Value 
Video Tutorial: Rational Numbers: Rational Numbers and Absolute Value. In this video, students continue their exploration of rational numbers by investigating absolute value. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3eZIU07 
Rational Expressions  
Video Tutorial: Ratios: Unit Rates 
Video Tutorial: Ratios: Unit Rates. In this video we look at unit rates. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Rational Numbers: Comparing and Ordering Rational Numbers 
Video Tutorial: Rational Numbers: Comparing and Ordering Rational Numbers. In this video students learn how to compare and order rational numbers using various techniques. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3eZIU07 
Rational Expressions  
Video Tutorial: Ratios and Proportions: What are Proportions? 
Video Tutorial: Ratios and Proportions: What are Proportions?. In this video, we solve proportion problems using equivalent ratios. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates  
Video Tutorial: Rational Numbers: Adding Rational Numbers 
Video Tutorial: Rational Numbers: Adding Rational Numbers. In this video students learn to add rational numbers. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3eZIU07 
Rational Expressions  
Video Tutorial: Ratios and Proportions: Solving Proportions 
Video Tutorial: Ratios and Proportions: Solving Proportions. In this video, we solve proportion problems algebraically. A Video Transcript is available for this tutorial at this link: Link Note: The download is an MP4 file. Related ResourcesTo see the complete collection of Videos on this topic, click on this link: https://bit.ly/3cGJcri 
Ratios and Rates 