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...
Better Lesson
Better Lesson: Understanding Multiplication With Equal Groups
Third graders develop their understanding of multiplication by grouping objects into equal groups to model the factors and products.
Better Lesson
Better Lesson: Fun With Four: Decomposing to Known Factors of 1, 2, and 5
Third graders act as problem solvers to take an unknown fact and solve it by breaking it down into pieces that are known.
NumberNut
Number Nut: Multiplying More Than Two Factors
Multiplying by more than one factor can be easy when you break the numbers down. Learn this problem solving strategy and others in this short lesson that demonstrates how to multiply with several factors. This lesson includes specific...
NumberNut
Number Nut: Multiplication: Multiplying More Than Two Factors
Explains how to multiply when there are three or more factors. Includes related activities.
Visual Fractions
Visual Fractions: Rename in Higher Terms With Lines
Rename fractions in higher terms with this interactive module. Number lines are used for fractional representations. Detailed instructions, practice opportunity, and immediate feedback provided for this concept....
Other
Sierra College: Elementary Algebra Review Sheet and Common Formulas
This review sheet includes important rules, properties, formulas, and equations needed to solve many Algebra problems.
Sophia Learning
Sophia: Multiplying Fractions
Students review how to multiply two fractions in this lesson. The video tutorial consists of examples that explore how to multiply fractions and a quiz is provided to test students' knowledge of the skill.
Illustrative Mathematics
Illustrative Mathematics: 5.nf Grass Seedlings
For the sake of this commentary, let R be the height of Rual's seedlings (of course students do not need to use a letter to represent any number in this task). Student must compare the size of each of two products (112xR, and 34xR) to...
University of Cambridge
University of Cambridge: Maths and Sports: Going for Gold
Looking at the 2008 Olympic Medal table, can you see how the data is organised? Could the results be presented differently to give another nation the top place? This activity encourages children to develop their skills in data analysis,...