Helping with Math
Worksheet: Dividing by 4
First notice that an answer key is available by the click of a box at the top of the page. Then you will see that learners practice the four times table before delving into division. Twenty-eight quotient-finding problems follow. A...
Curated OER
Where Have All the Endangered Gone?
Learners explore animals that are endangered. They choose an endangered animal that they would like to keep from becoming extinct. Students create a persuasive presentation to persuade someone to understand why they feel keeping their...
Curated OER
Comparative Stream Quality
Learners examine water quality on a nearby stream. They collect water samples and test for various factors, including any contamination from the treatment plant, and present their information in a Powerpoint presentation.
Curated OER
How Does Radon Get Into Your Home?
Students examine their home and calculates the amount of ventilation found. They also compute the surface area of different objects. They determine what is needed to reduce the amount of radon entering the home.
Curated OER
Landfills and the Potential for Groundwater Contamination
Students examine how a sanitary landfill is constructed, how it functions, and how waste and leachate affects the areas around the landfill. After a discussion about landfills and leachates, students construct a Sanitary Landfill Model...
Curated OER
Learning Through the Duke
Students examine the contributions of Duke Ellington to the field of jazz. They create an original poem using popular vocabulary from the 1920s, listen to the book, "Duke Ellington," and paint a picture while listening to music by Duke...
Curated OER
Break the Fast: The Start to Good Health
Students explore why eating a nutritious breakfast on a regular basis is important.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is a Factor in Math?
Explains common factor, greatest common factor, and lowest common factor.
Math.com
Math.com: Greatest Common Factor/practice Calculator
A page which generates number pairs and allows the user to find and enter the GCF. Keeps a running tally of correct/incorrect answers and has links to in depth review, if needed.
George Mason University
Margo Mankus: Investigating Lcm and Gcf Using Rods
This lesson plan is for an activity using rods (Cuisenaire Bars) to help students understand the concept of factors, in particular the LCM and GCF of two numbers.
Discovery Education
Discovery Education: Web Math: Greatest Common Factor
This WebMath site contains a tool for locating the greatest common factor. Simply plug in the numbers and you are on your way! Use it to check your answers.
Discovery Education
Discovery Education: Web Math: Factoring Polynomials by Finding the Gcf
This WebMath online tool is useful for factoring polynomials by finding the greatest common factor. Simply plug the numbers in and you are on your way!
PBS
Pbs: Greatest Common Factor
In this video, learn how to find the greatest common factor of two numbers. Then, see how this can be used to solve problems with large numbers. In the accompanying classroom activity, students learn to find prime factors using factor...
Khan Academy
Khan Academy: Interpret Scale Factor in Scale Drawings
Interpret scale factor in practice scale drawings.
Khan Academy
Khan Academy: Identify Scale Factor in Scale Drawings
Students practice identifying scale factor in scale drawings.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra
This site is a tutorial for students in algebra 2 or for those who need a refresher. The site has explanations, definitions, examples, practice problems and practice tests are found covering topics such as linear equations, graphing,...
Wyzant
Wyzant: Finding a Gcf
In this lesson from WyzAnt, students learn how to find the greatest common factor (GCF) for numbers and expressions. There are practice problems and a GCF calculator for assistance.
Lawrence Hall of Science
The Math Page: Skill in Algebra: Common Factor
Here is a site that thoroughly explains many topics related to factoring out the greatest common factor from a sum or a polynomial expression. There are example problems, problems for the student to attempt, and answers to the student...
AAA Math
Aaa Math: Practice Finding Greatest Common Factor
This lesson contains a learning exercise in which the user has to find the greatest common factor and type it in. The exercise keeps track of how many right and wrong answers given and gives you a grade.
Math Slice
Math Slice: Greatest Common Divisor (Factor): Math Worksheets
This tool allows you to create worksheets where students must find the greatest common factor in a set of two to four whole numbers.
Discovery Education
Discovery Education: Web Math: Algebra
This WebMath site provides links to tutorials and lessons in both Algebra I and II. Links to topics such as factoring, solving equations, polynomials, simplifying equations, graphing, and much more.
National Council of Teachers of Mathematics
The Math Forum: Learning to Factor
Math Forum Faq which briefly defines greatest common factor and links to an in-depth investigation of how the GCF is found.
Math Slice
Math Slice: Least Common Multiple: Math Worksheets
This tool allows you to create worksheets where students must find the lowest common factor in a set of two to four whole numbers.