Quia
Ixl Learning: Least Common Denominator
Brush up on your math skills relating to the least common denominator then try some practice problems to test your understanding.
Education Development Center
Tune in to Learning: What's a Percentage?
Use this site to learn about percents, and how they relate to decimals and fractions with this interactive online lesson. You will learn about percents, convert percents into fractions and decimals, and find equal parts of a whole.
Scholastic
Scholastic: Conversions Rock
Students will learn and reinforce skills for equivalent conversions of fractions, decimals and percents.
PBS
Pbs Learning Media: Feed That Dog
The CyberSquad solves the problem of giving equal parts of two apples to Cerberus, the three headed dog of Greek mythology, in this video from Cyberchase.
ABCya
Ab Cya: Equal Proportions: Dirt Bike Proportions
Start your engines! This racing game will speed up your math skills by challenging players to find equivalent fractions. The faster you solve the problems the faster the bike goes.
Illustrative Mathematics
Illustrative Mathematics: 4.nf Explaining Fraction Equivalence With Pictures
The purpose of this task is to provide students with an opportunity to explain fraction equivalence through visual models in a particular example. Part (c) should be approached as a discussion before students are asked to write an...
National Council of Teachers of Mathematics
Nctm: Illuminations: Concentration
Play a matching game with different representations of equivalent items.
PBS
Pbs Learning Media: Equal Amounts of Gold
In this Cyberchase video segment, the CyberSquad helps Pan and Pin divide up 15 gold bars.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers With Unlike Denominators 1
Practice adding and subtracting mixed numbers with different denominators. No regrouping required. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
BBC
Bbc Skillswise: Percent and Fractions: Ratio and Proportion
Activities and factsheets exploring ratios and proportions in everyday life. Interactive, colorful, and fun.
PBS
Pbs Kids Afterschool Adventure!: Operation: Pirate Picnic Activity Plan
Ahoy Matey! Join PBS Kids characters Peg + Cat to explore fair sharing and solve math problems to help a group of cranky pirates divide things fairly. Children will separate sets of objects into equal groups and divide single objects...
Cool Math
Coolmath: Coolmath4kids: Dirt Bike Proportions
Find the number which makes the fractions equal in this multiplayer race!
Quia
Ixl Learning: Ratios
Brush up on your math skills relating to ratios then try some practice problems to test your understanding.
Quia
Ixl Learning: Least Common Multiple
Brush up on your math skills relating to the least common multiple then try some practice problems to test your understanding.
Quia
Ixl Learning: Adding Mixed Numbers
Brush up on your math skills pertaining to adding mixed numbers then try some practice problems to test your understanding.
Khan Academy
Khan Academy: Equal Parts of Circles and Rectangles
Practice telling if shapes are divided into 2 or 4 equal sections. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Better Lesson
Better Lesson: Compare Parts of a Whole
Given a set of fractions students will be able to compare unit fractions by using models to determine that the more equal parts there are in the whole, the smaller each part will be. This lesson includes a detailed plan, samples of...
University of Waterloo (Canada)
Centre for Education in Mathematics and Computing: Ratio and Rate [Pdf]
Learners explore the concepts of rate and ratio in a variety of problem-solving situations. Worksheets contain definitions and visual representations of concepts. Link to related ratio game. Other skills include measurement, data...
Khan Academy
Khan Academy: Units
In this exercise, students solve word problems that involve using different units. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
PBS
Pbs Learning Media: Retrieving 2/5 of Electro Root
In this video segment from Cyberchase, Jackie and Inez figure out how to break an Electro-Root into 2/5, one of the ingredients for the antidote to Motherboard's virus.
Khan Academy
Khan Academy: Common Denominators
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.
PBS
Pbs: Simplifying the Sum of Two Algebraic Expressions
Simplify expressions with rational numbers using the distributive property of multiplication. This student-generated video focuses on using the distributive property to create equivalent expressions when multiplying by negative numbers...
PBS
Pbs: Simplifying an Algebraic Expression
Simplify expressions with rational numbers using the distributive property of multiplication. This student-generated video focuses on using the distributive property to create equivalent expressions when multiplying by negative numbers...