Seventh graders create their own dichotomous key. In this biology lesson, 7th graders classify animals based on their observable features. They explain how to use their dichotomous key.

In this fractions worksheet, students fill in blanks in sentences with the correct terms that relate to fractions. A reference web site is given.

Students practice estimating and graphing by utilizing Skittles.  In this statistics lesson plan, students complete worksheets based on the likelihood of a certain color of skittle coming out of the bag.  Students create a...

In this fraction high-low card game, 5th graders make 45 fraction index cards. They play a game in groups of three where they add the fractions on two cards and guess high or low for the next person's sum. Then they answer...

Fifth graders review adding, subtracting, multiplication and division of fractions and decimals through a variety of activities and exercises.

Students engage in a instructional activity that is about relational functions with the application of methods to real life problem situations. They use the examples found in the instructional activity for the purpose of practice during...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students must find the least common denominator for the fractions they are presented with. Includes video demonstrating a sample problem...

Find a quick, concise explanation of how to find the least common denominator for fractions or rational expressions. Examples are given and clearly explained.

Brush up on your math skills relating to the least common denominator then try some practice problems to test your understanding.

The rules for finding the least common denominator are clearly explained at this website. Two different methods are given. This is an excellent place to get step by step explanations for working with fractions.

Use this Least Common Denominator Calculator to find the lowest common denominator (LCD) of fractions, integers and mixed numbers. Finding the LCD is important because fractions need to have the same denominator when you are doing...

[Free Registration/Login may be required to access all resource tools.] This lesson covers solving rational equations using the LCD of the denominators to eliminate them.

The learning activity examines the least common denominator. Topics include fractions with denominators, common denominators, and the least common denominator. The resource consists of images, explanations, examples with solutions, and a...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students must find the least common denominator of two fractions in order to subtract one from the other. Includes video demonstrating a...

In this exercise, students practice finding common denominators. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Brush up on your math skills relating to the least common multiple then try some practice problems to test your understanding.

Practice rewriting fractions to have the same denominator. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Students learn about finding a common denominator in fraction addition and subtraction.

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to compare fractions in word problems and determine which is bigger or smaller. Includes video demonstrating a sample...

This section explores the process for adding and subtracting rational expressions. It primarily focuses on how to identify and use the Least Common Denominator to combine fractions with rational expressions.

[Free Registration/Login may be required to access all resource tools.] Compare fractions using lowest common denominators.

A graphing calculator lesson focusing on common denominator. Lesson contains detailed examples, visual demonstrations with key functions, and practice problems. Acrobat Reader required.

Part (a) of this task asks students to find and use two different common denominators to add the given fractions. The purpose of this question is to help students realize that they can use any common denominator to find a solution, not...

Part (a) of this task asks students to use two different denominators to subtract fractions. The purpose of this is to help students realize that any common denominator will work, not just the least common denominator. Part (b) does not...