Solving Proportions Without Cross-Multiplying
Students solve equations of the form A/B = C/D by doing the same thing to both sides of the equation, such as multiplying both sides by an appropriate value. They apply a previously learned concept in a new situation instead of learning a trick.
8th - 12th Math 3 Views 2 Downloads
New Review Analyze Proportional Relationships and Use Them to Solve Real-World Problems
What proportion of learners will benefit from the lessons on proportional reasoning? class members learn about proportional relationships, from unit rates to writing equations for proportional relationships. Then they learn to use...
6th - 8th Math CCSS: Designed
Calculate Percent of a Number Using a Proportion Model
The Common Core is all about ratios and proportions, and this video uses that method to calculate percents. This is the second video in a series that organizes information from an ice cream poll into a proportion to find how many vanilla...
6 mins 6th - 8th Math CCSS: Designed
New Review Solving Proportions
Find out if the amount of practice is proportional to better test scores. The video explains the steps learners perform to solve a proportion. Supplemental videos show examples of solving proportions of varying difficulty, which helps...
2 mins 9th - 12th Math CCSS: Adaptable